When I was lifting three times a week and running three times a week I would eat much more than that on an average day. If you&#x27;re working hard to gain muscle you can consume a surprisingly large caloric intake.<p>4kcal is about right for an average person on a gain diet. Source: <a href="http:&#x2F;&#x2F;www.muscleandfitness.com&#x2F;nutrition&#x2F;gain-mass&#x2F;eat-massive-get-massive" rel="nofollow">http:&#x2F;&#x2F;www.muscleandfitness.com&#x2F;nutrition&#x2F;gain-mass&#x2F;eat-mass...</a><p>At the olympic level some people consume 8kcal&#x2F;day or more.