Suggest Remedy For Sleepiness And Lethargy

Hi dr pls i want ur help my husband has 62 years he's overweight ,he is 62 years he's always feeling sleeping, he doesn;t move much ; now he got big stomak whom disturbing him ;he's asking if is good to do surjical operation . his weight is between 145 and 150and he's height is 166 ;he has blood persure and now he's taking glugophage to contorle for him the blood surgar .we shallbe on touch .thanx .