Half of my body is more fit than the other

This is random, but my right side of my body is more fit, toned, and muscular than the left side.

-My right bicep is larger than my left (but my left arm is stronger?)

-My abs are more prominent on my right

-My right breast is slightly smaller than my left (which I hear is normal)

-My right leg is more toned than my left

-If you squeeze at my hips, my right side doesn't have any movement as it is all muscle, but my left has less

I simply have less fat on my left than my right. Not that I have much fat on my right. I'm 5'4 and am 115 lbs.

This doesn't make sense to me since I work both sides of my body equally every time I work out.

Anyone able to explain this?
Half of my body is more fit than the other
Post Opinion