We've all had days when we just want to sit and home and do nothing that requires any form of stress or exertion. So, while you might be someone who goes to the gym five days a week, if you decide to extend your two-day rest to maybe a three-day rest or a four-day rest, that's still fine. But if you let it turn into a week or longer, then you're going to have some serious issues. The longer you stay away from exercise, the easier it is to give it up entirely.
There might be plenty of reasons why you'd stop exercising for a few days, be it to give your body some rest or because you're travelling or because you're ill. But ultimately, if you stay away from it for too long, it'll be easier for you to get into other bad habits like eating junk foods and avoiding moving as much as you can.
Not getting exercise can be really, really bad for your health. It can affect nearly all the systems in your body which also include wide-ranging structural and metabolic changes. Your bones and muscles may experience atrophy, your heart rate might increase, your physical endurance will become really low and your blood volume may decline rapidly.
So, no matter what kind of exercise you do, be it swimming, trekking, running or rope climbing, if you stop doing it for prolonged periods your fitness levels will reduce by half. Exercise is something that you need to do on a regular basis. It isn't a one-time thing that you do and then expect rewards. While it may be difficult to start all over again after having given up on exercise for some time, it isn't impossible.
In fact, some people actually come back stronger once they start making a recovery post their deconditioning period. This proves that no matter what, if you have the chance to get back into the game, you absolutely need to give it your best shot. And once you get back to your routine, there won't be anything to stop you. Stay tuned for more updates.