I completed half distance base high volume and proceeded to half distance build high volume. My FTP improved on the last ramp test and unfortunately was sick for 5 days two weeks ago so it was hard to recover from the high volume and intensity.
Then I thought to just change my plan altogether and do some traditional base. But then I thought of the polarized approach so why not experiment on a polarized approach to my training. I just used the traditional base high volume and swapped some over unders on tresdays (same progression as in sweet spot base), while continuing the same schedule of the half distance traiathlon build.
What do you think? Are over unders good alternatives or are vo2max or thresholds better?