Basicamente, nada como ser positivo:
http://time.com/4867746/exercise-fitness-positive-attitude/
Citação:
"Apparently, just thinking that you’re not exercising as much as you should may be harmful, too. In a new study in the journal Health Psychology, people who thought they were less active than their peers had a greater chance of dying younger—even if their actual activity levels were the same.
The research suggests that the health perks of exercise may come not just from the physical movements, but also how people think and feel about them, as well. In other words, people who feel like slackers may not be getting all the benefits they should be from their workouts."