Tool
Supplement comparison tool
Pick up to 4 knowledge base entries and compare their dosage, price, evidence strength and ratings side by side — you can save or share a link to your selection.
Add to comparison (2/4)
| Category | Biohacking | Biohacking |
| Evidence strength | Early-stage evidence | Moderate evidence |
| Evidence Score | 2/5 | 3/5 |
| User rating | 4.1 (87) | 4.4 (79) |
| Typical dose | Typical research and training protocol: 3–4 cycles of 30–40 deep inhales/exhales, each followed by a breath hold on the exhale lasting tens of seconds to a few minutes, practiced on an empty stomach, sitting or lying down, on land, never in water | — |
| Form | An equipment-free breathing technique; the cold component is usually a cold shower or brief immersion | — |
| Average price | — | — |
| Monthly cost | — | — |
| Time to effects | Subjective sensations (tingling, lightheadedness, a feeling of euphoria or mental clarity) appear within minutes, even in a first session. Claims of lasting health benefits after weeks or months of regular practice in the average, untrained person are not confirmed in rigorous clinical trials. | Not applicable — HRV is a monitoring indicator, not an intervention; changes in the trend become visible after several days to weeks of observation. |
| Who it's for | Healthy people without cardiac or neurological contraindications interested in subjective well-being and stress-tolerance benefits | Athletes wanting to objectively monitor training load and recovery |