Intervals: 8 rounds of Pushups, Sit-ups and Squats.

Set your timer for  20 seconds work – 10 seconds rest.

During the work segment: AMRAP (as many repetitions as possible). (yes, work hard) (and count them so next time, you can notice how much you have improved).

20 seconds Pushups

10 seconds Rest

20 seconds Situps

10 seconds Rest

20 seconds Squats

10 seconds Rest

Repeat sequence 8 times.

No timer? No problem. Use this one.