Back to Exercise

I am forcing myself back to exercise. Previously I go for swimming at least once a week. But this form of exercise not suit to me now. This is because I can not find a good time to swim. I am not leaving in apartment or condo which having swimming pool facility. I can not arrange my time to go for swim in public swimming pool. Furthermore, my weak body easily get cold and flu. I have no choice but go for my second choice of exercise.

You know what is the form of exercise I looking for right now? Guess!