What happens if you wait too long to get stitches taken out?

If you wait to long to take the stitches out, they will be harder to remove because they will grow into the skin. Plus,  the skin that's now regenerated, will think the stitches are foreign material( which they are) and will cause an infection and can  be very painful.

Awould be the answer

Push up require upper body strength, so weight-training exercises such as shoulder press, curl ups and dead lifts would improve your ability to perform proper push ups.