I can't quite see what you are asking. Do you mean 'Why is it more difficult to carry someone on land rather than in the water'?
If the meaning of the question is why is it easier to carry a person in water than on land is that the mass of the water makes the person much lighter.
Water is heavier than air and is harder to push against resulting in a harder work-out. For this reason atheletes and horses are sometimes trained in water, this gives them a harder work-out, making their performance on land that much easier.
It depends on what you are good at. If you have exceptional balance, and are a light person, football will be harder. If you are a heavier, strong, person who does not have good balance, you will find ballet is harder.
The more weight the harder to stop.
The amount of weight a person can carry will depend upon the person. The stronger the person is, the more weight that they will be able to carry.
being a postman will be harder on the body, but being a doctor will carry more responsibility and require more years at school.
you have more to carry so you do less because its harder making the fat increace and then making it even HARDER to do stuff
There was more land and it was harder for the emperor to defend
Wooden sleighs are becoming harder and harder to find. However, sporting goods stores carry wooden sleighs during the winter months. Specialty stores might carry them around this time, too.
The person who takes the breakup harder depends on the person in the situation - it is not simply guys or girls.
It's when highly productive grains are introduced to an area causing the land to work harder. Working the land harder eventually leads to the deterioration of the soil, erosion, and the decreased productivity of the land as a whole. It's when a farmer uses up all land available because not much land is available to farm on.
many different types of animals in the sea then on land