Your trainer:Sadie Kurzban, a Brown University graduate who founded 305 Fitness when she was just 23.
Do this:Three times a week to your favorite upbeat, high-tempo playlist.
The first few times through you’ll build muscle memory.
Don’t worry if it feels awkward; that’s normal.
You’re still getting a great workout!
Bend knees so thighs are parallel to floor.
Step right, splaying knees and opening arms like a bird’s wings (as shown).
Jump back to start.
Bring right foot back to center.
Stairmaster
Works: back, glutes
Start in a high lunge, right foot forward.
Tap left toes behind you for 1 rep. Do 20 reps; switch sides; repeat.
