Is this normal for men?!

Is this normal for men?

Im 35 married with 2 kids.I get hard all the time and specially whenever i talk to girls at work or anywhere.Specially this happens if i talk to a girl about my victory in a game or soccer or anything like kickboxing which i do every weekend.I feel guilty afterwards as i can't accept being sexually aroused by corworkers etc.but still it gives me great pleasure and i masturbate very regularly...and also out of the 24 hours of a day my penis is rock hard most of the time specially in the early mornings...tks...for your answers.

yea, it is normal

different people have diff levels of hormones

so it is fine