I try to stay physically fit through proper nutrition and light to moderately vigorous exercise, do you do similar things?
I need to! It' been a while but I was way into fitness. Now my fitness is fitness this donut in my mouth. What all do you do? Way interested. 
Well you can start by just walking 30 minutes a few times a week, and then build into some kind of physical exercise like swimming or weight training. I like weight training because I like seeing my muscles grow and I find it enjoyable.
I used to LOVE going to the gym. My life had some changes recently, it's hard getting back in the swing of things. I do, however walk 30 minutes a day. Do you stick with a certain diet?
I wouldn't call it any particular diet like keto or low-fat really. I just stick to whole unprocessed foods and try to eat a good amount of legumes, nuts, fruits, vegetables, whole grains, and a bit of meat,eggs,dairy to fill the rest. I consider that to be "proper" nutrition.