Sport activity must be introduced gradually. Simple walks starting from 3 km and increasing the distance to the distance that is comfortable for you. What about getting back to the gardening? It is not only a great type of exercise but health benefits as you will grow healthy food for yourself and family. Alternatively, If you could go to the pool, swimming is a nice physical activity for improving the strength of your body and weight loss. If you would prefer intense exercise, you can try a workout with dumbbells (starting with a small weight).