Running 40 [4] 4.8 km (8 / km)
ahr:154 max:189 shoes: Hoka One One Clayton 2
5m warm up
4x400
1m22s
1m24s
1m34s
1m33s
addition 5m rest
4x400
1m36s
1m34s
1m34s
1m31s
5m cool down
too fast for the first 2 400
try to make all of them within 90s next time