"A 2007 Canadian study targeting hip muscles had the same outcome: a group of college students using weightlifting increased their hip-muscle strength by 28.3%,

"A 2007 Canadian study targeting hip muscles had the same outcome: a group of college students using weightlifting increased their hip-muscle strength by 28.3%, a control-group doing nothing to their hip muscles exhibited no change in strength, and a group working on the muscles only via mental imagery showed an increase in the strength of those muscles by 23.7%." I wonder if you get all benefits of workout/cardio by just imagining. Would love to go for 10 minutes imaginary runs while sitting at my desk when my brain needs a break.