Mesomorphs strength are upper body; from birth they're going to have a very strong upper body that includes shoulders, arms, back, or anything that has to do with upper body strength they are naturally going to be good at.
A mesomorph can have little to no training and still have a better developed upper body then another body type that's been training for many years. Mesomorphs body type naturally has a very muscular upper body; they have a slow metabolism, and they have a slower metabolism because the more muscle you have the slower of a metabolism you have. What I mean by that is the faster your metabolism is, the faster it’s going to go through chemical substrates, and then it's going to go through bodily tissue, body fat, and muscle. So if you have a fast metabolism you probably don't have a lot of fat, but you don't have a lot of muscle either. So Mesomorphs have slow metabolism. It’s not the slowest of the three, its the second lowest of the three.
The next body type is the ectomorph. The body frame of an ectomorph looks kind of like a rectangle. The width of ectomorph shoulders and the width of their waste are even. Ectomorphs have the fastest metabolism out of any body types. So typically an ectomorph is not going to be more than 45 pounds overweight. Most ectomorph doesn’t gain weight at all--ever. Ectomorph bodies types can typically eat what they want in maintain a pretty small muscle size on their body frame. This can be a curse because if you're focused on weight and you’re not focused on health you are going to continue to eat what you want since you don't gain weight and diseases are going to manifest just is as if you were overweight.
Even though ectomorphs have a fast metabolism don't mean you can just eat junk foods all the time. Because ectomorphs body type are not likely to be overweight, poor diet stills can cause the chaos in your body that it causes an overweight person. Ectomorphs since they don't have a muscular upper body and they don't have muscular lower-body, these people are what you would consider skinny. Upper and lower body isn’t going to be their strength since they have less active tissue to work with. Ectomorphs’ body type strength is cardio; these people are typically runners.