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6

According to this health-related website, you should still wear a shirt: You should not think of sunscreen as an alternative to avoiding the sun or covering up. It is used in addition. Sunscreens should not be used to allow you to remain in the sun for longer - use them only to give yourself greater protection. No sunscreen is 100% effective and so it ...


4

Assuming you're reapplying the screen often (sweat washes it away) and it's a quality one, then it would do for what matters sun protection (although you should still properly cover your head with a hat or a bandana or whatever). That being said, I would use a shirt anyways; to protect your skin from the abrasion of the rucksack, to absorb some sweat, and ...


3

This sounds to me what we would call in the UK prickly heat. What causes prickly heat? Prickly heat usually develops when a person sweats more than usual, such as during hot or humid weather. However, it is also possible to get prickly heat in the winter. The condition is caused when the body's sweat glands become blocked. Excessive sweating ...


2

Heat rashes are caused by excessive heat trapped under the skin. As you specifically referred to ankles and shins, I'd suggest you considering using shorts instead of full pants, only if those tiny red rash-bums have not burst. If those are already burst then you should be going to a doctor in order to avoid any infection. Try to avoid clothing with ...


2

If you are a person who burns readily then sunblock at all times plus long sleeve shirt and hat are your only answer. However the danger of sun, IMHO is overrated, compared to the other hazards of life. At one point I used the World Almanac for figures: Fatal skin cancers kill about 2 people per hundred thousand per year. So skin cancer has about the ...


2

As Paul says, think of sunscreen as in addition to other protection methods. So while you can go without a shirt, it's ideal to also wear a shirt and use other protection methods like a hat. As for whether clothing is always better, that in large part depends on the clothing. Some clothing provides good sun protection while others (think shirts with ...


1

Your body needs a certain amount of salt (electrolytes) to process water (and also for many other bodily functions). If you don't have enough electrolytes then your body's use of water is not optimal. A typical American diet gives you enough electrolytes so that you actually do not need to do anything special to make sure you are consuming enough. If you are ...



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