Here are some simple exercises that won't even cause you to break out in a sweat. These five-minute exercises will strengthen your pectoral muscles, which will in turn improve your breasts by firming and lifting them:

1. Bring your hands together above your head and hold for a few seconds. Repeat up to 10 times. Doing this a couple of times a week is enough to notice a difference.

2. This next exercise involves you getting in a sort of prayer position. Press your palms together in front of your breasts. Press for five seconds, relax and repeat again 10 times.

3. This one's called the finger grip. Grip your fingers together at shoulder height and then try to pull apart without letting go. Hold for five seconds then let go. Repeat the exercise ten times.