@pablob Well although fat has a lot to do with pull ups you shouldn't focus on losing more fat to achieve pull ups.
I was also obese (100kg) and lost a lot of weight (down to 72kg) . I could do pull ups even at 100kg but there wasn't a huge difference in 72 kg , yh it was easier but not that much of a difference . It's logical though for two reasons
1) these 28 kg I lost weren't only fat which means I became weaker , I lost muscles as well
2) pull ups is a very hard exercise according to most people
I think that you should focus on exercises which will help you do pull ups in order to achieve them and not only on pull ups. Also you should focus on form which plays a major role. My form at first scked , later it became a little bit better and know I have perfect form . You should not aim for more reps but for better form and if possible heavier load . My personal best was 20 pull ups but they weren't perfect form . Now my best is 16 (I haven't really checked for a lot of time) but with perfect form .
Last but not least no your posture has nothing to do with pull ups or if it does it doesn't really affect you . I'm 6'2" (192cm+) 74 kg and can do many pull ups in comparison to my peers and shorter guys
I was also obese (100kg) and lost a lot of weight (down to 72kg) . I could do pull ups even at 100kg but there wasn't a huge difference in 72 kg , yh it was easier but not that much of a difference . It's logical though for two reasons
1) these 28 kg I lost weren't only fat which means I became weaker , I lost muscles as well
2) pull ups is a very hard exercise according to most people
I think that you should focus on exercises which will help you do pull ups in order to achieve them and not only on pull ups. Also you should focus on form which plays a major role. My form at first scked , later it became a little bit better and know I have perfect form . You should not aim for more reps but for better form and if possible heavier load . My personal best was 20 pull ups but they weren't perfect form . Now my best is 16 (I haven't really checked for a lot of time) but with perfect form .
Last but not least no your posture has nothing to do with pull ups or if it does it doesn't really affect you . I'm 6'2" (192cm+) 74 kg and can do many pull ups in comparison to my peers and shorter guys