Source: Medicine & Science in Sports & Exercise
Summary:
Participants were 40 individuals who did at least 30 minutes of aerobic exercise at least 3 times a week for the previous 6 months
Half stopped exercising for 2 weeks and the other half continued their workout routine
Negative mood scores at follow up were seen in the exercise withdrawal group, associated with reduced parasympathetic nervous system activity
Comment: Regular exercise makes you feel better, so going without exercise for a couple of weeks can affect your mood
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