Optimize Your Workout Time with Your Body Clock
Health researchers propose that aligning physical activity with one’s innate circadian rhythm could enhance exercise outcomes. According to a study in the journal Open Heart, individuals who naturally wake early may benefit most from morning workouts, while those who are more alert in the evening might perform better later in the day.
Study Highlights Benefits of Timing Workouts to Personal Rhythms
The research followed 134 adults aged 40 to 50 from Pakistan, none of whom were highly fit and all having at least one cardiovascular risk, such as high blood pressure or excess weight. Participants engaged in supervised treadmill sessions, walking briskly for 40 minutes five days a week over three months.
Based on self-reported surveys, 70 were classified as early risers and 64 as night owls. Some adhered to their natural wake-up times, while others trained against their preferences. The results showed that synchronizing exercise with circadian patterns led to more pronounced improvements in blood pressure, metabolic health, and sleep quality.
“Circadian rhythms influence sleep cycles, hormonal balance, and energy levels throughout the day, all of which can impact exercise effectiveness and consistency,” explain the researchers.
The findings suggest that a universal approach to workout timing is less effective. A misalignment between biological and social schedules, or “social jetlag,” has been associated with heightened heart risks. Night owls, in particular, may face greater challenges when forced into early morning routines.
Experts Recommend Flexibility and Routine
While the study underscores the value of personalized timing, Dr. Nina Rzechorzek, a circadian rhythms expert at the University of Cambridge, notes that regular exercise remains paramount. “Combining different types of activity is beneficial,” she says, citing NHS guidelines that recommend strength training at least twice weekly and vigorous cardio for 75 minutes.
Hugh Hanley, PureGym’s head of personal training, highlights shifting trends in exercise habits. “Monday and Tuesday evenings are still peak times, but flexibility is becoming more common,” he observes. “People are prioritizing health and adjusting their schedules accordingly.” He emphasizes that consistency, not intensity, is vital for long-term success.
“Consistency is key to maintaining fitness,” Hanley adds. “Forming sustainable habits is better than aiming for large, immediate goals. Breaking workouts into manageable, achievable segments is often more effective than attempting extensive sessions at once.”
Strength training is emerging as a popular choice across all age groups. “Both younger and older demographics are increasingly incorporating it into their routines,” Hanley says. Exercises like wall squats and planks—where muscles are engaged without full movement—can be particularly effective in lowering blood pressure and building core strength.
