Marathon’s consist of running/jogging/sprinting long distances, so first off it would be a good idea to increase stamina, which would be done by jogging everyday, increasing your distance everyday. Stretch your calf muscles upper leg muscles to avoid cramps while running too.
B. Spinal nerves I think, it makes most sense to me.
Two ways of enforcing safety in the home are : Getting a carbon - monoxide detector and smoke alarms! Hope this helps!
