Sit-up + punches

How to do it

1. Set upOn your back, knees bent, feet flat, fists by your chin.
2. MoveSit all the way up, throw two quick punches forward, then roll back down slowly.
3. Watch forFlopping back to the floor. The way down is half the work.

Easier or harder

Easier

Crunches: only curl halfway up.

Harder

Full tuck-ups: legs come up to meet you.

What it works

Muscles

Core

Position

On your back

Intensity

Moderate Medium

Impact

No jumping

Swap it for

• Bicycle abs
• Slow paused bicycle crunches
• Regular ol situps
• Starfish crunches
• Leg raises
• Leg drops

In these workouts

• Upper-Body HIIT Workout