Meshal, regular person dont have overactivation of dopamine during orgasm, they have normal activation of dopamine receptors, resulting in normal levels of glutamate after orgasm that will not cause problems in the brain.
Those who have overactivation of dopamine receptors will produce to much glutamate and too much glutamate harms brain.
You can try that and drink too much alcohol. Next day brain will produce too much glutamate and regular person will feal sick.