Kb swings waren goed voor mijn billen, en dan dit schema :
Use an undulating rep scheme to reach 500 total reps per workout:
Set 1: 10 reps
Set 2: 15 reps
Set 3: 25 reps
Set 4: 50 reps
x 5
https://www.t-nation.com/training/the-10000-swing-kettlebell-workout/