There are many advantages to exercising indoors. You can do it at any time you like. You don't have to show up at a certain time. If you feel like exercising at 10 p.m. at night, right before bed, you can do that. Additionally, you can go at the pace you like. If you feel like taking breaks or getting a drink of water, you can do it! And you can wear what you like because you don't have to impress anyone! Still, here are a few things to keep in mind when exercising indoors.