To get fitter, you should take a complete method that includes both exercise and changes to the way you live. Start with a well-rounded workout plan that includes cardio (like riding or running), strength training (with weights or your own body), and flexibility training (like yoga or stretching). To push your body, slowly raise the energy and length of your workouts.
Aim for at least 150 minutes of moderate-intensity exercise or 75 minutes of intense exercise per week, and make sure you stick to your workout schedule. To keep things interesting and work out different muscle groups, include a variety of exercises.
Make sure you eat a varied diet with enough protein, carbs, healthy fats, and water to meet your energy needs and help your muscles repair. Make getting enough sleep a priority for healing and muscle growth. Pay attention to your body, and if you're worried about your health, talk to a doctor or exercise expert for specific help.