Sitting more linked to increased feelings of depression, anxiety

During the initial COVID-19 outbreak in March 2020, a lot of people suddenly became more sedentary as they adhered to stay-at-home orders or opted to self-isolate. Recently published research found people who continued to spend a higher amount of time sitting in the weeks following were likely to have higher symptoms of depression. A closer investigation into this association could play a role in helping people improve their mental health.
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Brain circuitry for both positive and negative 'valence' affected by trauma

Research has revealed that the brain employs distinct circuitries that mediate positive, or rewarding, behaviors and negative, or aversive, ones. Post-traumatic stress disorder (PTSD) has long been thought to arise from overactivity in the negative valence system, however a new study shows that people with PTSD also displayed a deficit in activation of positive valence processing soon after the trauma, suggesting it plays a role in resilience to PTSD.
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