No way is that too much for your age. At 17-18ish I was running xc for the county at Scottish level races, banging out big miles on the road bike with the local roadie club – Dundee Wheelers – hard nuts that bunch, racing road during the season and there always used to be a weds’ night TT. However, I still used to go out on Fri’ night, Sunday too and from my rose tinted memory REALLY enjoyed female company! Oh and to fund it all I was a labourer at a joinery firm, so that took care of the strength training! Jeezo man, live life like there’s no tomorrow, cos before you know it you’re married, two bairns, working hard and no spare time to play with all your bikes.