30-Min HIIT Endurance
Build aerobic capacity with longer intervals. 40 seconds work, 20 seconds rest, five exercises, repeat twice. Total-body burner.
Workout Script
Jump rope 2x40s rest 20s Mountain climbers 2x40s rest 20s Jumping jacks 2x40s rest 20s Burpees 2x40s rest 20s High knees 2x40s rest 20s
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