Try this 11-minute core workout you can do at home, or repeat twice for a 22-minute ab circuit

Forearm plank: 30 seconds

High plank: 30 seconds

Side plank: 15 seconds

Side plank with crunch: 5 reps per side

Single arm/leg plank: 15 seconds

Rocking plank: 15 seconds

Knee-to-elbow plank: 5 reps per side

Standard crunch: 20 reps

Bicycle crunch: 30 seconds

Knee-to-elbow plank: 5 reps per side

Standard crunch: 20 reps

Bicycle crunch: 30 seconds