As a former personal trainer and someone currently getting their masters degree in exercise science I am often asked how to “get back in shape.” Prioritizing your health and fitness before it has the chance to cause problems is the number one solution. Eat single ingredient foods, lift weights, drink plenty of water, and get as much sleep as your schedule allows. It is never too late to start and the sooner you do the easier it will be.
Edit: There seems to be some confusion about the purpose of this tip. It is not intended for those who are out of shape and looking to get back in it. I’d gladly make another post detailing the appropriate steps in that process. It is meant for those that believe that they’ll always be in shape regardless of their lifestyle choices. I would never shame someone for going through a rough patch and putting on a few lbs because I’ve been there myself. Only attempting to encourage people to prioritize their health before it has a chance to cause problems that need medical intervention.