Yes, 155 push-ups would be a little high for me.
I think the most penance I ever got, was 20 our fathers. I thought that was a little steep, but I was just telling the priest all my mortal sins. I think I committed 10 mortal sins every hour. I figured, that among Catholics, there are those who committed lots of mortal sins, and those who lied about it.
The priest told me not to die with all those mortal sins on my soul. Little did know, EVERY sin is a mortal sin, and has ETERNAL implications. I don't know why some people have such a difficult time understanding that simple concept.