core
Sit-up
Classic ab builder.
▶ Watch the full demo in the app3-second preview. The full demo with coach cues is in the FirstGym app.
How to do it
- Lie on your back, knees bent, feet flat.
- Curl up until your torso is off the floor.
- Lower with control.
Beginner tips
- Don't yank your neck.
- Curl, don't just hinge.
- Keep the movement smooth.
Scared of the gym? Let a voice walk you through it.
FirstGym tells you what to do next in your earphones: every set, every rest, every machine. Built for first-timers and people coming back.
Get FirstGym on the App Store