What Actually Helps You Sleep

The warnings, in plain words: sleep researchers are blunt - no study shows that walking on salt improves sleep, and the crystals can sting or irritate skin, more so if you have even a small break in it. Some of the reported benefit is simply that a magnesium salt in a bath is a warm, slow wind-down, and that part is real.

What the science actually supports: the levers that hold up under review are the boring ones - a consistent wind-down time, cool and dark room, low blue light in the last hour, and not running hard right before bed. The barefoot minute is fine as one of them, as long as it is not being sold as the cure.

How the game keeps both honest: your relaxation score climbs with every step, and the warning in the corner climbs with it - the more "calm" you bank, the louder the doctor gets. The card prints a "scientific credibility" number so the two never get mixed up: you did the ritual, and you know what it does and does not prove.