Hello again, I’m a relative newcomer. Been plodding on with my <75% heart rate training. I notice that my legs fatigue while my heart and lungs aren’t particularly taxed. This has always been the case, and I’m assuming it’s because my legs are generally pretty weak. I tend to spin on the bike, which suits me.
It can be many things, without knowing your training schedule/history I’d assume you just need to build volume slowly over time, then by to dice some tempo and interval runs. Also, make sure your bike and run a sessions are spaced and easy enough so that the quality of the workouts are minimally affected.
Eg if I do hard intervals on the bike at 08:00 it’s likely to affect my easy run at 19:00. But if I put 24hrs between them it won’t.
First actual outdoor ride in 3 or 4 weeks and other than my 4 miles commuting each day, no riding during the same time. Just haven’t felt the mojo and also had a cold for the last two weeks. Wasn’t expecting much, but FML, that was hard. 40 miles with a couple of hills. Time to get back onto Zwift a couple of times a week.