Long-term space travelers will need high-intensity exercise to protect heart health

Sustained low-intensity exercise does not completely counteract the effects of weightlessness on the heart muscle, which will atrophy over time in a gravity-free environment. Short bursts of repeated high-intensity activity during shorter space missions may be more successful in keeping the heart healthy.

from Latest Science News -- ScienceDaily https://ift.tt/3dicnmG

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