I am currently a sophmore and I run a 2:24 for my 800 as my pr, a 58 400 pr, and 5:10 1600 pr...I got pneumonia my freshman year and got a groin strain this year...I haven't been able to get into the low 5s since I ran the 5:10 the lowest since was a 5:20

How to maintain 800 pace cause last 300-200 I'm slowing maybe I just need to fight it or maybe I need stronger mental what do u guys think thanks

I’ve heard tempo/threshold long runs are bad. Is this accurate? Because I tapped into threshold today during my 12k long run.

Why am I having such a huge spike in heart rate at 10-11 minutes into my 5k. It’s happened twice now but the effort between before it spikes and after feels the same. Is it that I’m hitting the lactate curve? Or is there another reason?

Is there any way to keep building/maintaining aerobic base while sick?