It's not much warmer in the garage than out at the moment though! At present, warm up involves some pressups and running on the spot in the warmth of house, do a couple of easy loops on jugs until fingers get sore and / or numb, go back into house until they warm up, then a couple of harder shouldery probs, then the hard crimp loop until I get tired and fall off. Then down jacket and gloves on and head out.