10. Your levels of dopamine and epinephrine are on the rise. Dopamine is a feel-good neurotransmitter, and epinephrine is more commonly known as adrenaline. “It helps to ensure blood flow is being directed to the areas that are most important for sexual activity, like skeletal muscles, which help with voluntary movements like thrusting,” says Abdur-Rahman. Adrenaline also helps you have enough energy for the action, he explains.
11. Your vagina is undergoing some truly magical changes, like your vaginal walls turning a deep purple color. That’s probably hard to see—and stopping just to check it out might not be on your agenda—but your labia minora also darken, which you would theoretically be able to notice.
12. Those muscle contractions start transforming into muscle spasms in body parts like your hands, feet, and face.
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