I am tired of not being able to run after bulking all winter
I went running earlier this week for the first time in months. Somehow I was able to knock out a 30 minute 5k, despite not being able to run continuously more than 2 miles (around 3.2km) around a year ago, at around a 10 minute mile pace.
I suspect that just going all in on lifting volume has actually gotten my cardio and leg endurance to be able to run without specifically training it.
Just an anecdote, but for me lifting heavy and high volume has somehow improved my cardio.
Nope, no real discomfort. Just normal fatigue and some mild soreness after particularly heavy days. I'm up to squatting sets of about 1.5x body weight, and deadlifting almost 2x, so warming up takes a while.
Honestly, my knees and ankles feel more after running than after lifting. It's part of the reason why I switched emphasis from running to lifting. I used to run a lot, but nagging injuries caused me to step back about 10 years ago.