Answer:
Yes it will. You can excersise indoors to stay fit while this virus is going on.
You can search up excersise videos on YTube, they have lots of videos for teens, adults, old people, etc.
If you don't like to watch videos while excersising then you can make your own routine, for example, do 20 pushups, 15 jumping jacks, and etc. Pound for pound, muscle burns more calories at rest than body fat. So the more muscle you have, the higher your resting metabolic rate. And, of course, you also burn calories while you're actually exercising.
Hope this helps and stay safe!