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Is there a fitness instructor?
Sit-ups, right

It doesn't matter, the waist-binding effect is better.

It is best to run 1 hour before doing it.

Then make 100 block in two groups.

If you can't do it, you can do less

8: 30 pm 8:30- 10/0 is the best exercise.

You can do several sets of sit-ups at noon, but it is best to do them after digesting for a while, or before lunch, and then eat them after finishing.

Hitting planes also has an impact, so it's best to fight less.