Here is an 18 Minute Workout which is set up in the following way;

1. Warm Up
2. 20/6 HIIT Session
3. 20/10 Core Session
4. Cool Down

So you have a full workout which will last 18 minutes and includes the warm up and cool down.

Come and give it a try. If you enjoy it then simply click the Workout Category tab and you will find multiple workouts available for you to do.

So set aside some time and give it a go.