I have always associated the number five with some of the things I find are the hardest. This list includes:
The first 5 km's of a run.
The first 5 km's of a spin on the bike.
The first 5 laps in the pool.
The 5 minutes between me waking and having glorious coffee in my hand.
I now have another one to add to the list. The first 5 minutes of a low blood sugar once I have treated it. It usually takes me at least this amount of time to start to feel the effects of the life saving glucose to hit my bloodstream. The first 5 minutes usually include flickering eyesight, cold sweat, shaking, the feeling that my insides are shuddering, increased heart-rate and decreased thought process, the nearly uncontrollable urge to eat everything in site and just plain fear. Just like the other things in my list, after 5 minutes things usually start to improve (not always but that is a whole other post in itself).