My "exercise hack" (if one might call it that) is to do some isometric holds in my closet doorframe, and around a few of the sturdier metal bars in my vicinity

My "exercise hack" (if one might call it that) is to do some isometric holds in my closet doorframe, and around a few of the sturdier metal bars in my vicinity when I go on walks. The holds aim for around five seconds length at maximum intensity(but without overly spiking blood pressure, something which is learned with practice). It takes 5-10 minutes per day and has a dramatic soothing effect almost immediately.