Its called fat does nothing for you.
I am as strong as I ever was 70 lbs lighter.
Remember I was deadlifting 600 at one point. 
Actually my optium weight is 225 at 10% or below but in strenght wise that extra size is not all fat but added muscle, when i train natural i bulk to the point of setting a good foudation of strength for when i turn to the darkside.
Can you deadlift 600 at your current bodyweight
It pisses me off this little gym rat does 4 plates per side for reps benchpress.i Have asked him if he was juicing he just laughed and said no.
I am fucking perplexed,There must be some physiological explanation?Tendon strength.
This gym rat keeps me up at night with his lifts that i can only exceed with the darkside of the force.