In one small trial the lead scientist said a 60-year-old memory came to test like a 40-year-old. Then a trial almost a hundred times bigger found the gain only in people who were short to begin with.
A drug that reopens a learning window, a nerve paired with practice, and a beam of sound aimed through the skull. Plus the free trick that beat rereading by 21 points.
Thirteen trials pooled into one answer: a warm bath at the right hour shortens the wait for sleep by about ten minutes. The reason is a thermostat under your skin.
An antibody, a pill and a pair of robotic shorts are all chasing the same prize. One arm curl a day, three seconds long, already delivers a slice of it.