Because there is a sticky substance when the mud and your flat shoes make contact. And also boots have a little gap at the top which is why they don't stick like flat shoes!
Mud
I don't know the BEST BEST road running shoes for women but I trust Nike brand running shoes just cause their so affordable and comfortable. Maybe don't get flat ones because your running on the road.
lack of friction?
PLACE. example: The car rolled down the muddy road. "down the muddy road" - adverb of place
It is difficult to walk on a slippery road because the friction between your shoes and the road is compromised. When you stand, its not so much an issue, as most or all of the force vector from your body is pointing down. When you walk, however, there is a horizontal component of the force vector, which is what is accelerating you in a horizontal direction. Since the road is slippery, the coefficient of friction between your shoes and the road is less, causing the tendency to slip or fall.
there are some strollers with almost "off-road" wheels that perform decently in muddy conditions.
The noun in this sentence is "road." It is the object of the preposition "past" and the direct object of the infinitive phrase "to get."
As compared to walking on unpaved dirt, walking on rigid pavement is easier, and less dirt sticks to your shoes, especially when it has been raining and the dirt road gets muddy.
It really depends on how muddy it is. If its just a bit muddy, the stock tires will likely be fine. However, if it is really muddy you will need some tires designed for off road mud driving.
Gypsy Flat Road was created in 2001.
Fell is a verb, flat in this use is an adverb, but in other uses can be an adjective. "The road was flat." Flat is an adjective to describe the road.
What i think is, as there is less friction on a muddy road it is difficult to walk on it. Water has less friction, that is why usually we see cautions warning us not to walk on wet floor as we'll slip and fall, so when soil is in contact with water it reduces the friction of soil.