hello dr. my friend who is 32 years old married person from last two years he was doing a great sex life but now a month ago he can't satisfy her wife and himself there ia lack of ereson .within one or two mintues he dispose of otherwise



before that he enjoy sex life half an hour or one hour



he has not any physical problem nor mentlly

so guide him for better sex life

how he can improve his sex life

is there any problem in panis's nerves?