#1 NPT Nocturnal Penile Tumescene (NPT) is the medical term for morning wood. Yes, he may be excited to see you in the morning, but he’ll be hard no matter what. #2 s e x u a l fantasies The condition is triggered by s e x u a l fantasies, and only slows down when he’s in his 60s to 70s. #3 Boing! Men are visual creatures, and almost ANYTHING can turn them on. Touch, smell, taste and looks get him h0rny. #4 Testosterone His testosterone levels are 25% to 50% in the morning, which has an affect on his p e n i s. #5 Blood Flow? Others say blood circulation is the cause, as it rushes to his penis overnight. #6 ANYTHING Causes It Even the slightest brush up against you could trigger a raging b0ner.. #7 A Ok But on the bright side, him having a hard on means he’s in good health and fully functioning. Time for kids!