Skipping your workouts can mess with your mood.
British researchers found that people who skip their workouts for just 2 weeks had significantly negative moods compared to people who continue with their program.
Skip workouts => Be cranky
It might be because stopping your workouts can cause inflammation and other biochemical changes that lead to mood changes.
What’s cool is you can boost your mood again by exercising. Another study (from the University of Georgia) found that 12 total sets will increase mood-lifting chemicals in your brain.
Here’s the reference to the British study:
Stress. 2011 Jul;14(4):439-47. Epub 2011 Mar 27.
The effects of exercise withdrawal on mood and inflammatory cytokine responses in humans.
Poole L, Hamer M, Wawrzyniak AJ, Steptoe A.
Department of Epidemiology and Public Health, University College London, London, UK.