Ninety-nine percent of obesity is due to overeating. Allah advises as to be moderate in quantity. According to one Hadith of Prophet Mohammed we are advised to leave one third of our stomach empty after finishing the meal. Fruits are low in calorie, high in vitamins and minerals, and fiber and sugar is fructose and not sucrose. In a recent study by Dr. Anderson fructose has been shown to cause no rise in blood sugar and even lowers the high blood sugar of diabetics.
Honey is fructose.
Allah is pure and likes purity. He is clean and likes cleanliness. This was stressed as part of our daily routine by Prophet Mohammed. In fact, he is known to have said that if it was not a hardship for Muslims, he would have advised using Miswak before each prayer i.e. five times a day. Though we do not find much in Quran about specific exercise, recommendation, the Prophet's Fife was full of recommendations.