When you don't drink enough water, your body is forced to retain what it has, which may lead to water retention, often seen as swelling of the hands, feet or legs. Because exercise causes you to sweat, drinking water is even more important because if you get dehydrated, you'll become exhausted faster and not able to work out as vigorously. Also, staying well hydrated throughout the day helps with appetite suppression. So drink plenty of water before, during and after your workout to prevent dehydration. Don't give up exercising before the benefits start to kick in.
People tend to lose motivation at the two month mark.
They think they should see an improvement in the way they look. When they don't see immediate results, they become unhappy, thinking all that sweat and hard work didn't make a difference. In reality, most people won't see a significant improvement in their appearance until they have been exercising regularly for at least three months. So don't give up. It's worth the wait.