The perfect body!!! Is that too much to ask?!?

[Fish]

If you can't run, try walking everywhere to begin with. Walking is great exercise, gentle enough not to injure you, and gives you a base level of fitness that you can then build up from when you're ready. Smaller meals, more often. Lots of fruit, veg and salad. Plenty of water.

[The-Muay-Thai-Kickboxer]

Have a situp contest with a friend i do that sometimes and i always win because i never give up even though after one of them i found out my oponnet cheated i did 450 and he only did like 50 but he said he did more.

[Kamiya]

Also, don't heavier people tend to burn more calories during exercise than a lighter person would for the same amount of time? So even if you can't run very far or very long yet, you should still be able to burn a similar amount of calories to someone who weighs less, but can run farther. Remember, every bit counts! And also, working out for 10 minutes 3 times a day is just about as good as working out for 30 straight minutes, so do whatever is most manageable for you! Good luck.