answer: #Person1# asks #Person2#'s to give some suggestions to help #Person1# get fit. #Person2# suggests #Person1# lifting knees to stretch legs, doing push-ups and using weights to exercise arms, and lying on the back to strengthen chest muscles.
documents: #Person1#: Can you suggest a few exercise to help me get fit and stretch my muscles a littlt? 
  #Person2#: 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. 
  #Person1#: I need to excise my arms too. How can I do that? 
  #Person2#: 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! 
  #Person1#: When I do push-ups, should I bend my elbows so that my nose touches the ground? 
  #Person2#: 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. 
  #Person1#: What's a good exercise for my chest muscles? 
  #Person2#: 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. 
  #Person1#: So I need plenty of space for this exercise. 
  #Person2#: Yes, you do. Lift the weight up, keeping your arms straight all the time. 
  #Person1#: Great. Thanks for you advice!