HIIT and abs workout!

HIIT

- 1 minute on 10mph 

- 1 minute on 4mph

For 20 minutes

Abs: 12x3 of each

- Hanging knee raises

- Hanging leg raises

- Hanging alternate leg raises

20 of each

Crunches

Toe touches

Bicycle crunches

Stability ball crunches

Leg raises (on bench) 

Reverse crunches

V sits