1000 reps

For time
100 Air Squats
100 Pushups
100 Lunges (alt.)
100 Sit-ups
100 Down Ups *
100 Step Ups (alt.)
100 Plank to Pushups
100 Russian Twists
100 Jumping Jacks
100 Back extensions

*Burpee, without the Pushup-part. Only down to straight arms and up to standing position.

Note: You can do the reps in any order and sets You like, as long as You accumulate the total number of reps of each exersice.
For example:
5 rounds, 20 reps of each
Or
10 rounds,10 reps of each