Best For:Muscle
Body Targets:Abs, Core
EXERCISES6
TOTAL SETS1
TOTAL MINUTES04
We aren’t joking with the title of this workout: It’s brutal. And incredibly effective.

You can do the entire routine in 4 minutes, but if you want a real challenge, rest two minutes, and try a second round—or even a third. We guarantee it’ll be an ab workout you won’t soon forget.

1. Circuit x1

 

Plank
1 Rep
For: 20 Seconds
 

Lying Hollow-Body Hold
1 Rep
For: 20 Seconds
 

Hollow-Body Bridge Hold
1 Rep
For: 20 Seconds
 

Goblet Squat
Max Reps
For: 1 Minute
 

Suitcase Carry
Max Reps
For: 1 Minute
 

Situp to Hipup
Max Reps
For: 1 Minute