The Kris Gethin Podcast

Most serious lifters treat cardio like the enemy, something that eats muscle, kills strength, and belongs in a different sport entirely. What they are missing is that the tool is not the problem, and avoiding it completely is quietly costing them their recovery, their longevity, and the very gains they are trying to protect.
In this episode of The Kris Gethin Podcast, I break down why the lifters who skip cardio entirely are not protecting their gains, they are quietly sabotaging them. I also get into why doing cardio every single day is one of the main reasons I can train five days a week and still recover, why the way most people try to get lean is the fastest way to end up smaller and weaker, and what actually separates the lifters who stay strong and athletic into their 50s from the ones who do not.
What's Discussed:
(0:01) Why cardio gets blamed for killing gains when the real problem is almost always the plan. 

(2:26) Why your aerobic engine is your recovery system between sets, not just a tool for endurance athletes. 

(4:46) How to know if you are actually in zone two without any gadgets or guesswork. 

(6:02) Why the interference effect is not the law of physics most lifters treat it as. 

(8:08) Why zone two makes you leaner without shrinking you. 

(11:49) The best time to do zone two relative to your lifting sessions.

(14:14) Why some lifters feel smaller when they add cardio and exactly how to fix it. 

(16:32) Why zone two becomes non-negotiable once you are in your 40s and 50s. 

(20:05) The five rules for adding zone two without disrupting your training or your size.

If you have ever blamed cardio for a bad training block, this episode will change how you think about it permanently.
Thank you to our sponsors: 
Biostack: NAD + Cell Shield from Biostack Labs https://biostacklabs.com/kris
Unmatched Supps: Natural pre workout, recovery, and hydration support (KGC10 for 10% off) https://www.unmatchedsupps.com 
 
Find more from Kris:


Website: https://www.krisgethin.com/  
Instagram: @krisgethin 
Youtube: @krisgethin  
2 Shred: https://www.unmatchedsupps.com/products/2shred 
 
Resources Referenced in This Episode:
Red Light Therapy
Brand: Red Light Rising
Link: https://redlightrising.co.uk/
Code: GETHIN5
Lumaflex, click here and use Code: KRISGETHIN (10% off)

• Collagen
BPC-157

TB-500

GHK-Cu

KPV

Cartilax

Sigma / Bio Cartilage / Nova Cartilage

Vesugen

Most people chasing fat loss are locked in on calories, macros, and training splits while completely ignoring one of the most aggressive metabolic disruptors in their life - the phone they keep glued to their hand from the moment they wake up to the moment they try to sleep. Your phone is not just a distraction. It is actively interfering with your circadian rhythm, degrading your sleep quality, spiking your stress hormones, and creating the exact internal environment where fat gain becomes easier and fat loss becomes harder.
In this episode of the Kris Gethin Podcast, I break down exactly how your phone is quietly working against your body composition, your discipline, and your recovery in ways most people never connect back to the device in their hand. If you have been doing everything right and still not getting the results you should, this episode will change where you start looking for the problem.
What's Discussed:
(0:00) Why your phone is one of the most aggressive disruptors of your metabolism that nobody is talking about.

(2:23) How artificial light from your phone delays melatonin and destroys sleep quality and structure.

(4:43) Why phone conditioning keeps your brain in a semi-alert state that follows you into sleep and wrecks your recovery.

(7:02) How disrupted sleep tanks insulin sensitivity, spikes hunger hormones, and drives fat storage the next day.

(7:37) Why the same brain conditioned to check your phone all day is the brain that fails at discipline, delayed gratification, and sticking to a plan.

(9:21) Why airplane mode is not enough and what EMF exposure at night is doing to your recovery environment.

(10:30) The tools Kris personally uses including Brick and Opal to build structure and break the habit loop.

(11:44) The exact daily protocol to fix this starting tonight without changing your diet or adding a supplement.

 
Find more from Kris:
Website: https://www.krisgethin.com/  
Instagram: @krisgethin 
YouTube: https://www.youtube.com/krisgethin
2 Shred: https://www.unmatchedsupps.com/products/2shred 
 
Resources Referenced in This Episode:
Red Light Therapy
Brand: Red Light Rising
Link: https://redlightrising.co.uk/
Code: GETHIN5
Lumaflex, click here and use Code: KRISGETHIN (10% off)

• Collagen
BPC-157

TB-500

GHK-Cu

KPV

Cartilax

Sigma / Bio Cartilage / Nova Cartilage

Vesugen

 
Thank you to our Sponsors:
Biostack: NAD + Cell Shield from Biostack Labs https://biostacklabs.com/kris
Unmatched Supps: Natural pre workout, recovery, and hydration support (KGC10 for 10% off) https://www.unmatchedsupps.com

Aging is usually framed as a genetics problem, a hormone problem, or something medicine will handle later. But the real issue is that most people are not dying because the clock ran out. They are losing strength, muscle, and physical reserve year by year until one illness, one fall, or one short stretch of inactivity exposes how little capacity they have left.
In this episode of the Kris Gethin Podcast, I break down why muscle may be the most overlooked form of protection you have against aging, what strength is actually telling you about your future, and why the difference between staying capable and becoming dependent often starts years before the crisis ever happens. 
 
What's Discussed:
(00:00) Why aging is not a clock problem but a capacity problem
(01:03) How strength and muscle density predict resilience better than appearance or perceived activity
(02:10) Why inactivity, illness, and hospitalization accelerate physical decline
(03:15) How Kris's father's ICU recovery reinforced the importance of muscle reserve
(04:28) Why falls are often a strength and force-production problem, not just bad luck
(05:30) How Kris's mother helped his grandmother recover and stay independent
(06:47) Why bone density, balance, and daily function all depend on resistance and load
(08:05) How assisted living is often the endpoint of accumulated physical decline
(09:12) Why resistance training is protection, not danger, as you age
(10:20) How muscle supports recovery, independence, and long-term resilience
(12:02) Why fragility is prevented by action, not caution
(13:12) Why daily physical choices determine whether you preserve capacity or decay
 
Find more from Kris:


Website: https://www.krisgethin.com/  
Instagram: https://www.instagram.com/krisgethin/ 
Youtube: https://www.youtube.com/krisgethin
2 Shred: https://www.unmatchedsupps.com/products/2shred 
 
Resources Referenced in This Episode:
Red Light Therapy
Brand: Red Light Rising
Link: https://redlightrising.co.uk/
Code: GETHIN5
Lumaflex, click here and use Code: KRISGETHIN (10% off)

• Collagen
BPC-157

TB-500

GHK-Cu

KPV

Cartilax

Sigma / Bio Cartilage / Nova Cartilage

Vesugen

 
Thank you to our sponsors: 
Biostack: NAD + Cell Shield from Biostack Labs https://biostacklabs.com/kris
Unmatched Supps: Natural pre workout, recovery, and hydration support (KGC10 for 10% off) https://www.unmatchedsupps.com

Caffeine is so normal in training culture that nobody questions it anymore. But the shock is this: the same stimulant you're using to "perform" can be cutting blood flow, drying you out, wrecking sleep quality, and pushing cortisol up while you chase a better physique.
If you're living on pre-workout and energy drinks, you might not be training with energy at all. You're training with stimulation, and the bill shows up later in recovery, muscle fullness, insulin sensitivity, and long-term performance.
In this episode of the Kris Gethin Podcast, I dismantled the science behind why caffeine is working against every goal you are training for and what the most disciplined athletes are actually doing instead.  
What's Discussed:
(00:01) Why I recorded this at the Arnold Classic and what I noticed about energy drink culture
(01:08) Why caffeine is normalized and why most lifters think they "need it"
(02:00) Adenosine explained, and how caffeine can reduce vasodilation and the pump
(04:24) The diuretic effect and why dehydration changes performance inside the muscle cell
(06:26) Sleep architecture, recovery, and why slow metabolizers get hit hardest
(08:05) Cortisol, chronic stress load, and the muscle loss risk nobody talks about
(09:55) Insulin sensitivity, nutrient partitioning, and why this matters for body comp
(11:05) The stimulant dependency trap and how tolerance quietly escalates doses
(13:00) Paraxanthine explained, and why I use it instead of caffeine
(14:22) The real takeaway for performance, physique, and longevity
If you train hard and care about muscle, recovery, and longevity, but have never once questioned what your daily caffeine habit is actually doing to your body, this episode is required listening.
Thank you to our sponsors: 
Biostack: NAD + Cell Shield from Biostack Labs https://biostacklabs.com/kris
Unmatched Supps: Natural pre workout, recovery, and hydration support (KGC10 for 10% off)
 
Find more from Kris:


Website: https://www.krisgethin.com/  
Instagram: https://www.instagram.com/krisgethin/ 
Youtube: https://www.youtube.com/krisgethin
2 Shred: https://www.unmatchedsupps.com/products/2shred 
 
Resources Referenced in This Episode:
Red Light Therapy
Brand: Red Light Rising
Link: https://redlightrising.co.uk/
Code: GETHIN5
Lumaflex, click here and use Code: KRISGETHIN (10% off)

• Collagen
BPC-157

TB-500

GHK-Cu

KPV

Cartilax

Sigma / Bio Cartilage / Nova Cartilage

Vesugen

Most people training for performance, muscle, or body composition have been told that carbohydrates during training are unnecessary, counterproductive for fat loss, or only relevant for endurance athletes. But walk into the hotel rooms of the professional bodybuilders, UFC fighters, and motocross racers at the Arnold Classic and every single one of them is consuming carbohydrates mid-session, because when you understand how glycogen actually fuels high intensity output, the debate stops being a debate.
In this episode of the Kris Gethin Podcast, I break down the exact physiology behind why skipping intra-workout carbohydrates is quietly costing you performance, muscle, and recovery, and the specific formula I have been using and refining for 21 years to fix it.
What's Discussed:
(00:01) Why this debate keeps confusing people, and what I saw at Arnold Classic
(02:21) Glycogen, glycolysis, and why high-intensity training runs on carbs
(04:45) Why intra-workout carbs can delay fatigue and help you finish as strong as you started
(07:08) The 4 things an intra-workout protocol should cover
(09:28) Key ingredients I use and what each one is doing physiologically
(11:47) Real-world examples across bodybuilding, UFC-style training, and high-output sports
(14:13) The practical takeaway, and what I am running next with my at-home trainer
 
Find more from Kris:
Website: https://www.krisgethin.com/  
Instagram: @krisgethin 
Youtube: https://www.youtube.com/krisgethin
2 Shred: https://www.unmatchedsupps.com/products/2shred 
 
Resources Referenced in This Episode:
Red Light Therapy
Brand: Red Light Rising
Link: https://redlightrising.co.uk/
Code: GETHIN5
Lumaflex, click here and use Code: KRISGETHIN (10% off)

• Collagen
BPC-157

TB-500

GHK-Cu

KPV

Cartilax

Sigma / Bio Cartilage / Nova Cartilage

Vesugen

 
Thank you to our sponsors:
Biostack: NAD + Cell Shield from Biostack Labs https://biostacklabs.com/kris
Unmatched Supps: Natural pre workout, recovery, and hydration support (KGC10 for 10% off)