Originally Posted by
Null66
Intervals are beating the stuffin's out of me.
I started them 3 weeks ago.
I think that improvements will come faster and faster as I build capacity and learn.
I'm convinced they are making me stronger, faster, and most importantly healthier.
Be careful with intervals. It's recommended doing one interval per week. Also make sure you have base mile or you might get burn out/injury.
Tabat intervals seems to work great for speed.