Looking back my old self directed training over the first few months back on the bike, I had a time in zone of around 50% endurance, 35% tempo, and 15% FTP+. The last 4 weeks my coach has my time in zone around 80% endurance, 5% tempo, and 15% FTP+. Similar amount of kJ / week, but a little more saddle time. Overall I feel better in general, with less fatigue during the week, and my power numbers have made huge improvements. Starting to wonder if the polarized model *is* in fact a better way to go than doing a ton of SST...