What is Biohacking?
Your body is a system you can optimize
Biohacking means using science and self-experimentation to take control of your biology. From light exposure to cold plunges, the goal is measurable improvement.
Explore the biohacking domains
Tap each area to see what biohackers optimize.
This step is interactive — open the Thier app to try it.
Hype vs evidence
Swipe left for STRONG EVIDENCE, right for HYPE.
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Self-experimentation done right
Real biohackers run controlled experiments on themselves: change ONE variable at a time, measure for 4-6 weeks, track outcomes objectively. Changing five things at once and feeling better tells you nothing about which one worked. Pick a clear metric (sleep score / HRV / fasting glucose / mood rating), commit to one intervention, and let the data decide.
Free vs paid biohacks
Most of the highest-ROI biohacks cost nothing. Compare.
This step is interactive — open the Thier app to try it.
Key Takeaway
The best biohacks are free: sunlight, cold, heat, sleep, and movement. Expensive gadgets rarely outperform these fundamentals.