I can't wear clothes of size 170, the length and sleeve length are not wide enough, and my bones won't lose weight. First of all, losing weight is a persistent thing. Your weight is a little heavy, even if you exercise into muscles, 100KG looks strong and burly. After getting up in the morning, you'd better go running or do some other exercise (I bought a treadmill), and then rest for 10 minutes. Be sure to eat more breakfast, because it is all day. Take a nap at noon first, and be free for dinner at night. If you want to go swimming, losing weight is very good. Remember to eat less at night and don't eat too late. It is best to eat 4 hours before going to bed. Finally, I wish you success in losing weight.