Very much so.
Both teens are rowers, the older one (girl, 15) has been competing for 3 years now...the 13-year-old (boy) started about 18 months ago.
This time of year, training is 3 weeknights and both weekend mornings. Weeknights indoors, weekend on the water, weather permitting. Unfortunately, where they train is a 30-45 minute drive away, so whoever takes them just loiters or helps out...so out for about 3.5 hours on the whole.
When the season begins (in a month or so) one of the weekend days will be taken up with regattas, these are whole-day affairs due to traveling. About 5 or 6 of them involve overnight stays due to distance...the others are just early starts/late returns. The weekday evening training is then back out on the water (when the clocks change) so can go on for longer.
We also have an 8 year old who has a few bots he does, and wants to start rowing when he is bigger. In the summer we tend to go to the beach and swim etc while the bigger ones train.
It is a juggle...lots of logistics around meals (appropriate food both before and after), kit, childcare for the youngest if he isn't coming etc. Wouldn't swap it though, I would rather be busy, and now we are used to it, weekends without anything feel never ending. It is good for them in all respects...they're keeping fit, socialising with wholesome peers, building discipline and relationships, keeping out of mischief. Their health and fitness is important to them because of it, so on the whole they make an effort to eat well, wouldn't consider drugs or vaping etc.