Improved blood circulation – showering with cold water is in going to improve your blood circulation between organs and skin considerably. With cold temperatures, blood flows to your organs for protection to keep them the warmest. Warm water sends the blood rushing to the skin so alternating between cold and hot (as I will detail later) can be a great way of improving your blood circulation. If you are just beginning, it might be best to stick to a cold shower only.
Improved mood – it is hard to quantify mood and indeed it is
altered by many things. As my
Unbalanced Brain series indicates, there are scientific reasons for many mood disorders. Cold showers can stimulate noradrenaline secretion in the brain, which is associated with improving mood disorders like depression.
Increased immune strength – unlike what your mother told you, spending time in the cold can actually increase your immune strength. Those who take cold showers typically exhibit
higher white blood cell counts as well as higher concentrations of plasma, T helper cells, and lymphocytes.
Increased testosterone levels – I’m always looking for healthy and natural ways of increasing my testosterone levels. It’s a boon in the gym, it makes me feel more motivated in general, and manipulating it naturally is the safest long term method I can think of. When I heard that cold showers can vastly increase testosterone production, I was even more thrilled. Not only is testosterone elevated during the shower, but throughout the day as well.
Metabolic advantages – from a body composition perspective, cold showers are also incredibly useful. The cold water induces an increased metabolic rate. The cold temperatures force your body to re-regulate the body temperature continually, which utilizes many calories.
Mark mentions that an evolutionarily retained adaptation to cold water exposure is a layer of protective fat. Therefore, get your cold shower short and sweet and then get out. Longer exposure to cold therapy is not necessarily better.
Better breathing – you may hyperventilate as soon as you get in a cold shower, which is a pretty natural response. However, the panic will only make the experience worse so it is in your best interest to breathe calmly and deeply. Few people breathe deeply so you may need cold showers to help you do so.
I didn't know about this. Thx OP
