Depends on HOW you exercise.
Many, if not all endurance athletes are technically underweight, so it's not like it's gonna kill you instantly.
And exercise can help to put some healthy weight on.
But you'd want to watch your duration, don't go more than maybe 30-45 minutes, and to make sure you're eating properly before and after exercise.
Why? Eat less food and exercise more.
yes
Being underweight is bad...... (Said no man ever)
you are the perfect height and about 3pounds underweight
Yes and no. If you are underweight and not healthy, then that's a problem. If you are healthy and have no issues according to your doctor, being underweight shouldn't be a problem. I am underweight by twenty pounds, and I have no issues besides ability to fight colds, but hey, don't we all?
There are no bad points of exercise
Nope, that's a pretty good average healthy bmi
It may be slightly underweight, but don't worry about it. As long as you eat healthy, exercise regularly, and feel good about yourself, then your weight really doesn't matter that much!
No. Exercise is really good for you.
Try swimming as an exercise.
No, it is not bad for you. It is a very good static core conditioning exercise to do.
If physically modifies bad, it should be moved to the end of the sentence in order for the sentence to flow smoothly. However, it isn't at the end of the sentence. That tells us that bad is not modified in this sentence. Rather, "physically" is telling us about exercise; the exercise is physical exercise not mental. Compare with this sentence where bad is modified: If you do not exercise you may feel bad physically.