Biohacking for Lifters: What's Worth It and What Isn't

Tier 2: Depends on how you use it

Cold plunges and ice baths

Cold water can reduce soreness and feels good to many people. But for muscle building, timing matters. In a study by Roberts and colleagues (Journal of Physiology, 2015), people who took a cold-water bath after strength sessions for 12 weeks gained less muscle and strength than people who did an active cool-down instead.

If building muscle is your goal, avoid cold plunges right after lifting. Keep them for rest days or well away from training, or use them in a competition phase where short-term recovery matters more than long-term growth.

Saunas

Sauna use is associated with better heart health. A large Finnish study (Laukkanen and colleagues, JAMA Internal Medicine, 2015) found that men who used a sauna four to seven times a week had a lower risk of dying from heart disease than men who used one once a week. That was an observational study, so it cannot prove the sauna itself was the cause, but saunas are relaxing and low-risk for most healthy people.

Two cautions: replace the fluid you sweat out, and avoid saunas after drinking alcohol. If you have a heart condition, ask your doctor first.

Wearables and sleep trackers

Rings and watches are good for spotting trends: are you sleeping less this month, is your resting heart rate creeping up during a hard diet? They are much less accurate for single nights or exact sleep stages. Use them as a prompt to look at your habits, not as a score to chase. If checking your sleep score makes you anxious about sleep, take it off.

Tier 3: Mostly hype for healthy lifters

"Testosterone boosters"

A 2020 study by Clemesha and colleagues (World Journal of Men's Health) looked at 50 popular testosterone-boosting supplements. 90% claimed to raise testosterone, but the published research on their ingredients mostly did not back that up, and for some ingredients it showed a decrease. If you are worried about low testosterone, the right step is a blood test and a conversation with your doctor, not a supplement.

Continuous glucose monitors (without a medical reason)

Glucose monitors are valuable for people with diabetes. For healthy lifters, a rise in blood sugar after a meal is normal, and there is little evidence that chasing a "flat" glucose line improves body composition. The things that improve blood sugar control in healthy people are the same as always: muscle, activity, a healthy weight and sleep.

Expensive gadgets and stacks

Red-light panels, hyperbaric chambers, long supplement stacks and the latest "longevity" compounds mostly have early, limited or mixed evidence for lifters. If something costs a lot and the main evidence is a podcast, be sceptical.

What about peptides?

Peptides are often sold as the ultimate biohack. Most of the ones popular in gyms are not approved medicines and have very little research in people. See peptides for bodybuilding: what the evidence actually says.

The real biohack

The boring basics, done consistently for months, beat every hack on this list:

1. A program that progresses
2. Enough protein and the right amount of food for your goal
3. 7 or more hours of sleep
4. Daily steps
5. Honest tracking and small adjustments

Where coaching helps

The hard part is not knowing the basics. It is doing them every week, and knowing what to change when progress stalls. With one-to-one coaching from CoachAk, your training, nutrition and step targets are written for you, and your weekly check-in covers your weight, training, nutrition, steps, sleep, energy, hunger, stress and digestion, so your coach can adjust the plan based on what is actually happening.

If you want the basics done properly before you spend money on hacks, apply for coaching.