Physical education is a unique aspect of education in that it provides the only. instruction for students in the development and maintenance of positive attitudes, essential knowledge and physical skills. The contribution of physical education is to.
Conditions we more often associate with skin, like psoriasis, can also cause brittle nails. Some companies sell vitamins that are meant to help strengthen nails, most notably using a b-complex vitamin called biotin, but there is very little evidence to suggest that these vitamins actually improve brittle nails.
Sometimes, brittle or crumbly nails can be caused by: 1  a fungal nail infection â this is often the cause of crumbly toenails and can be cleared by taking a course of antifungal tablets. 2  a skin condition called lichen planus â this can just affect the nails.