<s>[INST] Hi doctor, i keep having these horrible back, neck, knee, feet pains that are causet by masterbation when ever i check people tell me its perfectly normal, and sometimes i just cant help it, what bothers me the most is the morning after i wake up, i get a suvere headache. Please write back, thank you, Sami. [/INST] hi sami..it is not normal getting these pains ..it seems you are so weak and lacking vitamins ..I recommend vitamin b12 and vitamin c .eat vegetables..fruits..and low fat proteins. </s>