My son has normal testosterone (518), FSH, LH, and estradiol levels, but the endocrinologist detected a hypothalamus problem. He is prescribing him Androgel for 3-6 months. He has great nutrition and weight trains 4 times per week. Despite improving his mood and increasing libido, what other effects should he expect? Will he get noticably stronger or see an increase in weight/muscle mass? Aggression? What else should he expect?