Hmmm my height has never hindered me in the gym. At 6'6" I'm stronger, bigger, and way more cut than any of my friends, and one of the strongest dudes at my gym. 90% of my lifting is with free weights, and everything is executed with perfect form. I guess it just depends on your body type/genetics, because I see other tall guys who struggle with certain routines. I do heavy leg presses instead of squats though, since squats put way to much pressure on my knees. No problem doing strict form bicep curls with 90lb dumbbells or 150lb dumbbell chest presses. But then I've been lifting for 13 years too.. I've got tall friends who lift sloppy as f--- though.