Select the most appropriate ANTONYM of the highlighted word in the given sentence.
The worker is known to exert himself a lot.

'Exert' means to make a physical or mental effort or apply pressure/force. Its exact antonym is 'relax', which means to rest from work or engage in an enjoyable activity that requires little effort.
* Emerge: Become apparent or prominent.
* Crouch: Adopt a position where the knees are bent and the upper body is brought forward and down.
* Stress: Give particular emphasis or experience mental tension.