Is it best to try to do easy distance runs all at the same pace as you are building mileage during your base phase of distance training? Or Is it better to go off feel and push the days you are feeling good and go easier the days you don't feel the pop in your legs. Or should you target some days to run be "faster" easy days and others to be "slower" recovery easy days?
As an example, I usually run my easy runs at 7:00 min pace but when I am feeling good will go as fast as 6:40s and sometimes as slow as 7:20-7:30 if I'm not feeling great. Should I be targeting days in my base phase to be hitting 6:40s or just let those days happen naturally?
Thanks.