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Throat : If your throat tickles, scratch your ear : When the nerves in the ear are stimulated, it creates a reflex in the throat that can cause a muscle spasm. This spasm relieves the tickle.
Need to pee? No bathroom nearby? : Fantasize about Bips. Thinking about sex preoccupies your brain, so you won't feel as much discomfort.
Injections : Coughing during an injection can lessen the pain of the needle stick.
Sinus: An easy, quick, and cheap way to relieve sinus pressure is by alternately thrusting your tongue against the roof of your mouth, then pressing between your eyebrows with one finger.
Toothache : Cure your toothache without opening your mouth : Just rub ice on the back of your hand, on the V-shaped webbed area between your thumb and index finger. The nerve pathways at the base of that V stimulate an area of the brain that blocks pain signals from the face and hands.
Too much booze : One too many drinks left you dizzy? Put your hand on something stable. The part of your ear responsible for balance—the cupula—floats in a fluid of the same density as blood. As alcohol dilutes blood in the cupula, the cupula becomes less dense and rises. This confuses your brain. The tactile input from a stable object gives the brain a second opinion, and you feel more in balance.
On a date: Trying to quell first-date jitters? Blow on your thumb. The vagus nerve, which governs heart rate, can be controlled through breathing. It'll get your heart rate back to normal.
Headache : Press your tongue flat against the roof of your mouth, covering as much as you can. Since the nerves in the roof of your mouth get extremely cold, your body thinks your brain is freezing too. The more pressure you apply to the roof of your mouth, the faster your headache will subside.
How to remember things : Since most memory consolidation happens during sleep, anything you read right before bed is more likely to be encoded as long-term memory.