This is true, hope this helps!
Different exercises are needed to improve different muscle groups.
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lght I'll help you with whatever you need if I know it of course
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ask more questions to open up and definitely confront the problem to her so you guys can work it out because if you don't and you both keep holding back it's not finna help nun so just go to her talk to her get out of you comfort zone. make the first moves yk don't hold back communication is key.