Building rear deltoids effectively requires direct isolation exercises such as the reverse pec deck, cable rear fly, and elbows-out row rather than relying solely on general back rows or shrugs. Tracking physical changes over time helps assess rear shoulder development from angles standard mirrors miss.
What people think builds rear delts
Rows alone
Face pulls only
Heavy shrugs
What actually builds rear delts
Reverse pec deck
Cable rear fly
Elbows-out rowCompare the angles mirrors never show
GainFrame
Like the comics? The app does the tracking.
GainFrame turns progress photos into body fat estimates, muscle scores, and honest trend lines — the stuff these comics keep nagging you about. Free to start on iOS.
