全神貫注
To concentrate one's attention on
神清氣爽
A clear mind in a calm state
聚精會神
To concentrate one's attention on
心馳神往
One thoughts fly to (a place or a person)
Similarly as to the difference between fascias elasticity and muscle contraction, it may be interesting to try to first determine what belongs more to vitality. Of course, since vitality is mainly invisible, contrary to muscle mass, the noticeable differences lie more in effects than on visible or touchable things on one's body.