A lot of people are under the impression that their bodies cannot withstand physical activities just because they are fasting. However, the truth is otherwise, it is recommended that those fasting should engage in some kind of light exercise, such as stretching, walking, house chores or just simply walk up and down the stairs.
I would suggest you to make a note and pay attention to your energy level during the first few days of Ramadan and try to find a time that works for you. Whatever time, day/night that your energy level allows you to expend extra calories without becoming fatigue, is the best time for you to exercise.
Always remember to hydrate yourself at night and drink at least 8 glasses of water (spreading the whole night until sahur). You tend to sweat alot when you exercise so it is important you have enough fluid to last you during the day.
It is sad to note that most people fail to see that being physically fit allows you to have greater fulfillment in life, hence enabling you to perform your worships and prayers in a more healthy and relaxed manner.
I will always try to remind myself (ahaksss..Im only human you see) that overeating does not help at all especially with all the spread in bazaar ramadhans. (damn those food...oooppssss its ramadhan, im not supposed to swear! Forgive me God) Unfortunately, most of us tend to eat more than what is needed to compensate. Our aim at iftar is to eat only as much as we need to provide us with the energy necessary to do both our work and worship. We should eat in moderation :)
With a bit of discipline and self restraint, Ramadan need not be the 30 day marathon of gluttony that it has become. (Sad but true) We should take this opportunity to detox our body, kick a bad habit, and hope to lose a few kgs.
Salam Ramadhan Everybody
