Take interest in sports
You must develop interest in sports and try to take part in them physically. Through sports, you can remain immensely fit and enjoy the game at the same time, which is an ideal way of keeping yourself fit. In order to enhance your skill level in a sport like football, cricket, hockey, badminton or tennis, you would naturally spend some extra time on your fitness and the strengthening of your muscles.
Working out in gym is becoming increasingly popular around the world and people of all ages try to spend some time in the gym to strengthen/develop their muscles; whereas, some use it effectively to lose fats. Go to a gym nearby your home and start with light training. However, you should look to increase the weight gradually, as your body gets used to the work out.
Swimming or general exercises
According to many analysts, swimming is one of the best activities in order to enhance your fitness, as you have to use every single muscle of your body while swimming. However, it is imperative that you are consistent in your approach and do go for swimming at least three to four days in a week.
If you are not much into sports and you do not like either swimming or gym, you can start jogging or cycling. Gradually increase your timing. You can learn stretching of your muscles through online videos.
However, the key behind climbing to the peak of your fitness is to enjoy the work out.