One of the characteristics of thin skin is presence of a thick epidermis

Absence of an epidermis

presence of hair

absence of hair

presence of hair

Explanation:

Thin skin is found throughout the body except for on the palms of the hands and the soles of the feet.

Thin skin contains four layers of cells, whereas thick skin contains five layers. The extra layer present in thick skin is called the stratum lucidum

Thick skin also has a thinner dermis than thin skin. It does not contain hair follicles.  

which ever one is showing doing the same exercise in time intervals such as 30 seconds or a minute several times.

the maintenance of fluid balance during exercise. author information: fluid supplementation is necessary for exercise in which fluid losses must be offset by intake to avoid the negative effects of hypohydration on health and performance.