Athlete Tools
Track it or argue about it
Baseline, change one variable, re-test. Entries are stored on this device — no account, no sign-up.
Vertical jump
inches · Higher is better
Sprint time
seconds · Lower is better
The Springbak® Challenge protocol
- 1. Baseline week: three sessions, same surface, same shoes, best of three attempts.
- 2. Change one variable — install your Springsoles under your existing insoles.
- 3. Re-test in weeks 2 and 3 under identical conditions.
- 4. Compare bests, not averages. A tenth is real; a hundredth is noise.