Medicine Ball, 2kg!!!

Today, there was PE(Physical Education) and we had a competition against the class next door, 6 Innovation 11. The rules were quite easy. But the work was the one that was tough.
Rules:
1) Take the 2kg ball, run to the volleyball net and go under it.
2) Do 10 sit-ups on the green matress while holding the 2kg ball on your chest.
3) Run to the game board and hit a target with the softball provided.
4) Earn 5 points for hitting each target.
5) Take the 2kg ball and run back to your class, giving the next person the ball to continue the game.

I found the sit-ups the most tough one as the 2kg ball was very heavy. After throwing the softball on the target, I forgotten to take the 2kg ball back and thus, I wasted quite some time that could be used to hit more targets.