Space fever is not a myth at all, scientists say. In conditions of a long stay in zero gravity, the temperature of the human body rises, and during physical exercises, which are necessary in space, it rises even more. The discovery is especially important given the fact that if people in the future want to fly somewhere beyond the moon, they will have to adapt to changes in their own temperature or solve this problem in some external way.
Researchers in Germany took temperature data from 11 astronauts, starting to collect information 90 days before the flight and ending 30 days after returning. During all this time, people wore especially sensitive sensors on their foreheads. These sensors showed that, firstly, after some time (two and a half months in orbit), the temperature of the human body becomes higher on average by one degree, and secondly, in low gravity conditions it grows faster than on Earth … When the astronauts played sports, their body temperature regularly exceeded 40 degrees.
Most likely, experts said, this was because the key factors regulating human heat transfer were modified when external conditions changed. In particular, sweat evaporates more slowly in space, leading to overheating during exercise - and this can be a real problem for humans. The results of the work may help to solve this problem, and they also raise the question of how the optimal temperature of people has changed during evolution and how it will change in the future, taking into account climate changes on the planet.