Every product in sports promises an edge. The only honest response is a protocol: control what you can, change one thing, and write down what happens.
The protocol
- Baseline week: three sessions, same surface, same shoes. Log standing vertical, 10-yard and 40-yard times, and a late-session fatigue score.
- Change one variable: install the Springsoles under your existing insoles, trimmed to fit.
- Test weeks 2 and 3 under identical conditions — same warm-up, same time of day.
- Compare best-of-three, never averages.
What counts as a result
At these distances, a tenth is real and a hundredth is noise. An inch of vertical repeated across sessions is real; one lucky attempt is not. Individual results vary — which is exactly why you test on yourself.
Log every attempt in Athlete Tools. Three weeks from now you will have data instead of an opinion.
Put it beneath your feet
Springbak® Springsoles — 3/32nds of an inch, trim to fit, $29.95.
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