An older gentleman at the gym has started lecturing me

It's been a little over a year since I first greeted that older gentleman.
Since I travel a long distance to get to the gym, I sat down on a rest chair for about 5 minutes after arriving to catch my breath and watch some news on YouTube.
Then he came over to sit next to me and started snapping at me with a scowl, saying that watching things like TV is useless~~~ and telling me to hurry up and go work out.
I was so annoyed I almost lost my temper...
I came to the gym to exercise, not to a workplace, so there was no answering him.
Even when I told him I was just taking a short break before working out,
he just kept saying, "Hurry up, go work out," with a dark, negative expression. There was no point in talking to him; I don't know why he does that when he should just focus on his own workout.