Dec 13, 2025
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Early- and late-day exercise (around 8 a.m. and 6 p.m.) reduced colorectal cancer risk by 11%, with this two-peak activity pattern showing greater benefits than other exercise timing schedules
Morning exercise between 8 a.m. and 10 a.m. reduced breast cancer risk by 26%, likely because it helps lower estrogen levels during their natural daily peak around 7 a.m.
Evening exercise between 7 p.m. and 11 p.m. specifically benefited men, reducing prostate cancer risk by 25% through improved melatonin production, which helps regulate processes that protect against tumor growth
Early morning exercisers showed a 13% lower risk of developing high blood pressure over seven years, while combining morning and evening activity provided similar cardiovascular benefits
Exercise timing should align with your chronotype (whether you’re a morning or evening person), as misaligned exercise patterns may increase cardiovascular strain and reduce overall benefits