Posted 08 October 2012 - 09:07 PM
I think the thought factors "Yes I can do this" and "No I can't" have quite a big effect on what you can do. Especially in the gym when I am doing deadlifts. If I go up to a set or one rep max thinking unsure or don't think I can do it, it has quite a detrimental effect on my performance. If I go thinking I can do it, it really changes things for the better.
Most things like that require not just physical but mental strength too, they go hand in hand. If I go in tired, the negative thoughts will overpower the positive, whereas of I'm rested and have plenty of energy I will walk up knowing that I'm on the upper hand of the scale and can perform near my best. It makes a big difference.
Would I call this willpower? I'm not quite sure, because like in the experiment, the chocolate cookies and the energy they provide would probably tip them into a positive frame of mind. Whereas those who sat there and watched would probably be more susceptible to negative thoughts toward the exercise or be less inclined to do it due to their energy levels.
I would definitely say the mind has a big influence, it definitely plays a part to what is physically possible for you and could on the most part be the difference whether you can do something or not.