3DMJ know there stuff. All the posing and pic taking isn't just to show off. It doubles as conditioning work.
This shows how much practice goes into stage/posing prep and tweaking even at a Pro level
. Your physique changes all the time and your poses to look your best will also. To many think poses are generic. Watching posing vids are great
starting point and if you aren't 100% dedicated and shooting for pro.
If you plan on a career you need to learn how to tweak your poses every year. Spend hours in front of a mirror or vid camera so you can review your poses. As you seen in the vid even 1" change can totally change your look.