I find I need to eat every 2-3 hours so snacking is a given for me.
However as I low-carb I have had to make sure that I have low-carb snacking food to hand. I keep a pack of mixed nuts with me and find that just a small handful is enough to tide me over. alternatively I keep mushrooms or cauliflower in the fridge and have a some raw with a little dollop of humus (yummy).
I start the day with a few nuts and then have some porridge and bran (my main carbs of the day) a couple of hours later. This apparently gives me the 2nd meal effect and improves my BG response after the porridge and its slow release to fuel me through the active part of the day. I'll have a snack about midday and then a low-carb meal a couple of hours later (basically a bucket of salad with tuna/cottagecheese/coleslaw/humus) then another snack late afternoon before another meal around 7.30pm (fish/omelatte/meat with veggies and salad) then just before bed I'll have half a seeded ryvita with cheese.
I try to do a little exercise (10 mins x-trainer) about an hour after my evening meal as this is reputed to help bring down BG. Otherwise I run for an hour 3x a week and do at least 1x 40minute strength building session each week as lean muscle mass is important for maximising the benefit of whatever insulin i'm producing - and muscle burns calories.
I'm never hungry and actually have to periodically add fats (cream, etc) into my diet to stop myself from losing too much weight. I do find that I have to consciously add a little salt (in the porridge) to prevent cramps. I also add a multivit tablet and daily marmite, garlic, and cinnamon.