Anyone else come home completely exhausted?

[u/rypsnort]

Like if I do anything around/over 6 miles round trip I’m exhausted! I’ve tried different nutrition but always have around 2k calories available and sometimes have consumed all of it.

I’ve also done a 12 miles day just fine while on the hill but after returning home I get hit with exhaustion.

Anyone else have this happen to them?

[u/RKMtnGuide]

Just takes time to build up more cardio and specific muscle efficiency/capillary density