Stair Sprint: how many steps can you smash in 60 seconds?
One staircase. One minute. Up and down — every step counts.
First, everyone writes their prediction on paper. No practice runs!
Then the clock starts. Ready… set… GO! Best predictor wins.
Your heart is the honest scoreboard
Who nailed their prediction? Here's the fun part: check your heart rate right now — count beats for 15 seconds, times 4. That's the honest scoreboard. It's shouting at you even when your legs feel fine.
Write your number down. That's your baseline. Same sprint Friday — beat your number by just 1%. Hearts get stronger the same way muscles do: a little, often.