01/06/2026
Don't forget to lift and lift heavy. 🙂
You might not need a sauna to activate heat shock proteins. Heavy resistance training may do the same job.
New research suggests heavy lifting alone may stimulate many of the same protective cellular pathways associated with sauna use and heat exposure, namely heat shock proteins (HSPs). HSPs are a family of protective “molecular chaperone” proteins produced by cells in response to stressful conditions, such as extreme heat, cold, UV light, or toxins. Their primary job is to stabilize new proteins to ensure they fold correctly and to refold damaged proteins to prevent cellular malfunction.
So HSPs drive cellular repair, protein folding, stress resilience, recovery, and adaptation. They’re one of the major reasons hormetic stressors like sauna use, fasting, cold exposure, and exercise are consistently linked to improved longevity and recovery.
Researchers used a protocol of six sets of 10 heavy back squats at 85% of 1RM and observed a substantial increase in HSP expression following the workout.
What this means in practice:
🏋️ Heavy lifting may mirror many of the cellular benefits of heat stress (nice to know if you can’t get access to a sauna!)
🔥 Extreme temperatures may not be required to trigger these adaptations
🧬 Mechanical tension alone can trigger a meaningful cellular response
⚠️ The harder you train, the more recovery, sleep, and nervous system regulation matter
Insider tip: if time permits, I get into a sauna POST-workout for a huge HSP amplifications - finishing my workout with moves like pushups and body weights squats at 215F for 10-15 minutes.
Comment “SHOCK” and I’ll send you the article.
