In sex, it is feeling or experiencing sexual feelings or attractions towards someone or
something.
In
sport, it is the intensity of motivation and excitement experienced while engaging in training or participating in
sport.
Example
One - Sex:
His arousal towards his girlfriend made him further want to make love with her.
Example Two - Sex:
The arousal he felt after watching the pornography made him want to watch more.
Example
One -
Sport
The footballers' arousal levels were increasing as the match played on, making them further motivated to play well and put more effort in.