Half Chelsea / Every minute on the minute for 15 minutes perform:
10 pull-ups
15 push-ups
20 squats
If you fall behind the clock, keep going for 15 minutes and see how many rounds you can complete.Post results to comments.
Scaling:
If you are unable to complete a round in 50 seconds or less when fresh, reduce the reps.
Intermediate Option / Every minute on the minute for 15 minutes perform:
7 pull-ups
12 push-ups
18 squats
If you fall behind the clock, keep going for 15 minutes and see how many rounds you can complete.
Beginner Option / Every minute on the minute for 10 minutes perform:
3 ring rows
6 elevated push-ups
9 squats
If you fall behind the clock, keep going for 10 minutes and see how many rounds you can complete.