Prolactin
Fire burn changes the wood chemical.
Uranium
nucleotide
The things your body needs to stay alive basically. Things like your sugars and proteins and fats, they all give you energy. Therefore if you arent taking in enough of these nurtrients, you wont have much energy. There is no chemical that MAKES you tired, its the lack of other chemicals, or lower levels. The most common is taurine, it is an amino acid in our body. If you are to read the back of an energy drink, taurine is responsible for keeping us awake and functioning, so therefore, low levels in taurine will make you tired.
hemoglobin
because it takes work for her and makes her sweat there for she gets tired.
If you're tired after sex, go to sleep!
Yes sex can make you tired because your moving and moaning during se so yes
Yes!
Infection can make you tired and reduce your sex drive.
Because sex is an activity and your working and breathing hard.!
there is force that makes your muscles tired
Makes me tired
Not Harmfull but do sex when you need do not do sex when your partner is tired be relax
Because the heat makes your muscles relax and therefore makes you tired.
Go to sleep.
yes its quite the work out ;)