I heard of intron, a non-genic locus of the gene. Mutations also occur there
. You don't want to plateau. Adding variety to your workouts will keep your exercises from becoming ineffective. If you run at the same speed on the treadmill everyday for 20 minutes, your body will eventually hit a plateau
Can be both good and bad, because that your decison and thats your consequence of the desicons you make.
Hope this helps