10 points! What's The Regular Amount Of Push Ups,Sit-Ups,Crunches, And Jump-Rope Per Day For A 13-Year Old??

I'm a 13-year old boy, and I've be doing sit-ups, crunches, and push-up, and jump-rope to be healthier and construct my stomach look slimmer. What is the right amount of sit-ups, push-ups, crunches, and jump-ropes I should do? I don't want to do too much and hurt myself. Please be more descriptive, and give me sources. I will pass 10 points to anyone who is more discriptive, and who helps the most. Thanks.

situps per sunshine 50
pushups perday 50
crunches perday 100
jumprope perday 25 min.

since its summer by the time u start school u should hold a flat stomach.
The most scientific answer you can go and get is contained in Dr. Coopers "Aerobics". He will update you to concentrate on jump rope. Three to six times a week. And make a contribution you the exact minutes you need for this and any similar exercise depending on the progress you are making. Also, he includes routines for the others you mentioned. He also includes the benefits.
The one caveat. Joint problems. He does not consider impact.
For some plea people do not want a experimental answer to this question. I do not know why.

The medicine and health information post by website user , ByeDR.com not guarantee correctness , is for informational purposes only and is not a substitute for medical advice or treatment for any medical conditions.

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