Signs that your period is on its way are if you've grown underarm and pubic hair. Typically, you'll start your periods about two years after your breasts start growing and about a year after getting a white vaginal discharge. The average girl will get her first period around 12 years old, but it varies from person to person.
Here is a graphic of the muscles used in push ups. Compare it with the following about bench press. Both will give you a bigger chest and some more arm and shoulder size. Push ups work the stomach more. I've been working out in the gym for more than 40 years. My advice to anyone who will listen is to do a lot of push ups. Yes, I know the bench will get you stronger than push ups, but it is push ups that will allow you to bench when you get my age.
2. One of the most underrated benefits of doing push ups is the stretch it provides to your biceps and back muscles. As you lower yourself to the floor, your back muscles are effectively stretched, and as you push yourself to the starting position your biceps obtain a full stretch.. One of the most underrated benefits of doing push ups is the stretch it provides to your biceps and back muscles. As you lower yourself to the floor, your back muscles are effectively stretched, and as you push yourself to the starting position your biceps obtain a full stretch.