Track Running race 18:31 [4] 5.0 km (3:42 / km)
ahr:162 max:170
5K TT
Felt OK at the start and was aiming at 1:25 laps. I started feeling the inside of my shins after the first mile. Couldn't keep my speed up and slowed down a bit. Quads, calves and hamstrings were totally fine during and after the run. Felt like I haven't stressed them at all. Breathing was hard but controlled. HR was around and a bit over the aerobic threshold. So what is hindering me from running fast?.....Just tired from lots of speed work and hills? Not enough willpower to push harder? Age? No idea...