Do bones become weak doing masturbution twice?

What two endocrine glands have antagonistic functions? What is the job the of digestive system? Can women get pregnant 17 days after her period? Can raw onions under your arm pits make you sick? Do you loose leg hair when you age? Why does sterility results with undescended testicle? How does a virus spread from one host to another? Is nicotine an amphetimine? Can you go crazy if you think too much? Large process below the neck of the femur? What should you do if you have had a colonoscopy and are now markedly distended? What is false a Arteries carry blood away from the heart b Veins carry blood back to the heart c Capillaries and arteries are similar in size d Blood travels from? What is the word for enlarging pupil in dim light? Where can a man Sell his sperms in USA and for how much? How long does mild balanitis take to cure? What is the neurilemma and what is it function? True or false the heart is a strong and specialized muscle? Which animal can not vomit like a rat? Can nipple have dead skin? What is the differecnce between resemblence and a twin?