In my opinion, endurance sports are an area where we just have to bend the rules a bit.  You simply can't keep yourself fueled with quality foods AND observe the 30-minute rule.  I try to stick to whole foods and fruits - sometimes Cliff bars and the like - but I definitely avoid liquid sugar like gel packs and cubes.  I'm a fan of Nuun tablets you drop in water, which you can find anywhere, and it turns your water bottle or CamelBak into an sugar-free electrolyte drink.

As long as you're eating mindfully and measuredly for fuel during the activity I don't really think there's a big concern.

This is what I have noticed too. The people who are at a healthy weight and have stayed at that weight all made exercise a part of their lives. Whether it's running, walking, kayaking or playing a sport it seems to be very helpful in long term success.

I personally find eating healthy to be much easier when I am exercising. My body feels great and seems to crave healthy foods instead of junk. I think with myself, exercise is going to be key in keeping off my weight.

I am not against exercise or yoga

There is so so many reasons why exercise is good for a person and I have read what everyone has wrote and they are all correct but here is another way of looking at why people should exercise and that is to help keep you strong and to help you with balance. I know most of my classes I take we do some balance work which is so important for when you get older so you don't end up falling and breaking a hip. We also work on posture so you don't end up walking with your back so bent over it looks like you are looking for something.  I know i have Osteopenia and they have seen an improvement from my exercise. Right there gives me a reason to get out there and do it. 

I have put weight on since the surgery and I just can not seem to get it off but I hate to see where I would be if I did not exercise. 

Last thing working out is a great way to meet other people and to develop some good friendships. I can't tell you how many great people I have meet in races and ran with and helped get them to the finish line and when I can help someone make it to that finish line that gives me more pleasure than crossing it myself.

For all these reasons I truly believe exercise is something we all should be doing

Yoga is an amazing method to increase your mental and physical health. Weight is not a factor for practicing it. Yoga can do any poses with the help of an expert instructor. It will help you to get rid of all your stress.