Writer or runner? Both?

Trying to convince myself that being a runner means that I can be a writer. Here is my current argument with myself that is pretty convincing.

RUNNER
Mental over physical
Can run anywhere
Need fuel to keep going
Time of day/amount of sleep is material to performance
Technology helps performance
Looking forward to that "runner's high"
something > nothing
Helps to wear comfortable clothes
Can run with dog on leash
Cake as reward is motivation

WRITER
Mental over physical
Can write anywhere
Need fuel to keep going
Time of day/amount of sleep is material to performance
Technology helps performance
Looking forward to that "writer's high"
something > nothing
Helps to wear comfortable clothes
Can write with dog on lap
Cake as reward is motivation