Randomized Trialmoderate evidence
An Intensified Training Period Reduces REM Sleep but this Decline Can Be Mitigated by Ketone Ester Supplementation.
Medicine and science in sports and exercise·October 7, 2026·PMID 42841497
Why it mattersIntensified training can impair sleep, particularly REM sleep, which is important for recovery and performance. This study suggests ketone ester supplementation may protect REM sleep during heavy training blocks, offering a potential nutritional strategy for athletes and active patients.
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