Her Finger Pulls Ups

When I see my cold hearted ex at the gym.

this is beneficial to mountain climbers, they may have a hand hold that only can have a few fingers on it, that's why that thing she uses to grip on has different sized holes so you can work on doing this with a number of different finger holds. The only way to get used to doing a 1 fingered pullup is to do it

Additionally, the reason that she's using her middle fingers as opposed to her index (or any of the others) is because the middle finger is centered and in line with the forearm. This prevents unnecessary torque being placed on the wrist, which would eventually cause injury.

The coolest way to flip someone off

Awesome, looking down makes perfect sense, but didn't think about that. TIL

You are correct.

Source: Am a climber

Is there any real difference in muscle building between this and using all fingers and thumbs?

It definitely helps if you're a lesbian

I have seen the gif Janice, i dont care how many Cosmopolitan magazines you read, you are not going near my prostate.