How can i exercise in my room?

I found the concept of "bringing the gym to you" brilliant. You have absolutely no excuse saying that "you're too tired", "the gym will be full", "oh i'll go tomorrow" .You can use your bedroom as your gym. You only need to spend only 15 to 20 minutes per day to do your own exercise..

Try this at your room...

Push-up

STEPS:

1)Firstly,place your palm to the ground in prostrate situation.

2)Bend your arms, bringing your chest within two or three inches of the ground. Inhale as you go down. Keep straight!

3)Push against the ground to straighten your arms, lifting your body back into the starting position. Exhale as you come up. You've just completed one push up

5)Repeat the steps as many times as you can

Sit-ups

STEPS:

1) First,lay down on the floor/ground

2)Then,place both of your hand to the back of your head

3)Pinpoint your eye to your comfortable eye view level

4)Make sure,keeping your heels and toes to the floor.Then,slowly lift your head,followed by your shoulder blades.

5)Repeat the step until 100 times

Lunge

STEPS:

1) Stand in a split stance, with feet about 3 feet apart. You want both knees to be at about 90-degree angles at the bottom of the movement, so adjust accordingly.
2)Bend the knees and lower the back knee toward the floor, keeping the front heel down and the knee directly over the center of the foot.
3)Keep the torso straight and abs in as you push through the front heel and back to starting position.
4)Don't lock the knees at the top of the movement.