IMHO this is the time to be training yourself to have cold-showers. Which raises your immune system because it causes rapid breathing to take place by shock. Frankly most people follow this pathetic western externally developed indulgent habit of hot showers. I'm not fucking about; after around 10 cold showers you start to crave them which should be done over a month or longer. Totally removing any warm/hot showers or frankly stop if you truly cannot handle it. This stimulates blood flow & an immense feeling of wellbeing by been in control of your body. You will not need a warm/hot shower unless you are actually unwell or having breathing issues. Cold shower procedure Open bathroom window to have temperature the same as outside. I tend you do some (10+) press ups naked before entering the cold water. Which is already running to train your body for what is about to happen audibly. But any warming up technique is recommended keeping well clear of toilet or basin porcelain. Calmy step into cold shower flow & wet yourself down for one minute. You should be moving all the time, or carefully spinning. This will at first make you want to get out or start shaking which is a normal reaction. Then once doused down turn water to a dribble to help lather up your soap bar & do your normal soaping routine (making sure your do your private areas lastly). Then turn up cold water flow & rinse off for another minute, rinsing soap bar of pubic hair & potential feces. Then do not use a towel, with a window open march on the spot. In less then three minutes you will have heated up & self dried. Leaving your head & toes & private area to quickly rub dry with towel. However if you have access to outside from a shower. Stick some trunks on et cetra/flip-flops & walk about & you'll be dryer in far less time. As the air/wind will evaporate the moisture. The more you follow this routine the quicker you heat up & become revitalized! Please only do what you feel your capable of sustaining, you do not need ice-cube baths or standing in cold water for more then two-minutes. Double slap hands & feet scenario Fixes anyone who suffers from cold hands or feet from what people call 'bad blood flow. Clap your hands together as hard as you can suffer & quickly follow up with a second less brutal slap then rub side to side. Do this every couple of hours away from anyone who may be judgemental. I judge that within 4-weeks you will have considerably warmer hands/feet. And in cold weather a quick hand double slap (not overly hard) stimulates the same reaction to take place. For you're feet you also slap them with a hand twice & rub away, eventually simply stamping downwards wearing shoes/boots will produce warmth. The pins & needles feeling created in both situations initially will give way to warmth. Back pain When you wake up, do not move fast or suddenly rush. Your spine is retracting & you're height is shrinking this may have already happened. So monitor your height at the start of your day against a door frame. As long as you feel nicely warm, raise up & sit on the side of the bed (if you have bed on the floor a chair will be used sitting forward of the backrest). Then do some gentle twists of your torso followed by a few side-way leaning excercises. Before sitting nicely straight & standing up. Do not bounce your body/spine on the mattress. Do this when ever you feel aches or have done a hard days work previously. I do this same scenario with my neck before wearing a helmet for biking. I want my neck supple & warm, so I wear neck buffs/neck warmers.