Can you suggest a few exercise to help me get fit and stretch my muscles a little?
Sure. If you want to stretch your legs, a good exercise is to lift your knee in front of your body, like this. It's a very simple exercise, but very effective.
I need to excise my arms too. How can I do that?
One good way is to do push-ups. Another way is to use weights. Make sure you grip the weights firmly. You don't want to drop them on your feet!
When I do push-ups, should I bend my elbows so that my nose touches the ground?
You don't need to bend your elbows that much. Bend them so that your arms are at a 90 degree angle. The most important think is to remember to keep your body straight. Many people bend their bodies at the waist, which reduces the effectiveness of the exercise.
What's a good exercise for my chest muscles?
One that I recommend is that you lie on your back. You should have a weight in each hand and stretch your arms out either side of your body.
So I need plenty of space for this exercise.
Yes, you do. Lift the weight up, keeping your arms straight all the time.