Ideally, you want warmth overnight as your body goes into repair and growth mode, and warmth all morning dying off before you leave the tent. Plus you want a Teasmade; for that early morning brew. The warmth, first thing in the morning is essential, more so in colder temperatures. You wake up, your body is all warm and cuddly in the thick sleeping bag, you get out and it's 30 below and you go into shock! :yikes: That's why I love the armholes in my Nanok - you can eat and drink, and unzip a bit as you warm up. The transition is nice and slow ):ChrisKavanaugh said:Back to the issue of heating the tent and putting aside safety issues. You want a warmer tent primarily at night wilst asleep. Daylight brings physical activity and eating.