Don't feel like exercising? Maybe it's the wrong time of day for you

A recent study highlights the importance of aligning exercise routines with an individual’s natural internal body clock to maximize health benefits. Researchers found that people who exercised according to their chronotype—morning larks in the morning and night owls in the evening—experienced greater improvements in cardiovascular health, metabolic markers, and sleep quality. The study involved 134 participants in their 40s and 50s from Pakistan, all with at least one heart risk factor, who completed supervised treadmill walking sessions five times a week for three months. Participants were divided based on their chronotype, with some exercising at times that matched their natural alertness patterns and others at opposite times. While all showed fitness improvements, those who synchronized exercise timing with their body clocks saw more significant reductions in blood pressure and better aerobic capacity. Researchers suggest that the internal body clock, which regulates sleep-wake cycles, hormone levels, and energy, plays a crucial role in exercise performance and adherence. The findings challenge the conventional “one-size-fits-all” approach to workout scheduling and highlight the risks of "social jetlag," a mismatch between biological rhythms and social obligations, which is linked to increased heart disease risk. The study’s implications extend to fitness industry practices, where flexibility in gym hours is becoming more common to accommodate varying chronotypes. Experts emphasize the importance of consistency and realistic goal-setting in maintaining an exercise habit, noting a growing trend toward strength training across all age groups. This research underscores the potential for personalized exercise timing to enhance health outcomes, particularly for individuals at higher risk of cardiovascular conditions.