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.