Population
Who participated, what was their age, health status, and training background?
Evidence desk · 2026
Research can inform decisions without pretending that every study answers every personal question.

Who participated, what was their age, health status, and training background?
What did participants actually do, for how long, and compared with what?
Was the change meaningful to daily life, or only statistically detectable?
Good evidence narrows uncertainty; it rarely removes the need for judgment.