 Ubu bushakashatsi buvuga ko mu gihe cyo gutwita imbaraga zumubiri wumugore zibasha kwihanganira uburibwe bikagera ku gipimo cyinshuro 2,2 zigipimo kitwa Resting metabolic rate Dr Pontzer avuga ko ubu bushakashatsi bushobora gufasha abantu kumenya ubushobozi bwumubiri wabo mu kwihangana ndetse nabakora amarushanwa byumwihariko. 