The aptly-named Operation 400 workout tests both physical and mental fortitude with its unrelenting protocol
If you’re looking for a workout that will push you to the limit, the aptly named ‘Operation 400 is just that. The premise may sound simple – complete a total of 400 reps across a series of exercises – but the reality is anything but.
The Operation 400 blueprint
- Your 400 reps should be divided evenly between each exercise (80 each) – but how you get there is up to you.
- Rest as needed.
- Below is an example – but choose any five exercises you like, as long as you spread the load across your whole body.

Workout example
- Press-up
- Bodyweight squat
- Sit-up
- Squat thrust
- Burpee