Well, it just might be true! Winter might be cold and wet, but it also has unique benefits that can help lead to a healthier you. Of course, there is one requirement: you have to go outside!
One major benefit of a good snow cover is snow functions as an excellent insulator of the soil. Without snow, very cold temperatures can freeze the soil deeper and deeper. This could lead to damage of root systems of trees and shrubs.
The insulation effect of snow also helps protect perennials, bulbs, ground covers, and strawberry plantings from alternating freezing and thawing cycles. Without snow, milder temperatures and the sun could warm the soil surface, leading to damage from soil heaving, which can break roots and dry out plant parts. Snow also helps conserve soil moisture over the winter.
It covers the earth like a blanket during that period of winter sleep which is necessary to recruit its exhausted energies, and prepare it for fresh efforts in the spring; and being, like wool, a bad conductor, it conserves the latent heat of the soil, and protects the dormant life of plant and animal hid under it from the frosty rigour of the outside air.
One final positive on the snow is the enhanced visibility of some landscape plantings. Trees and shrubs with ornamental bark, such as red twig dogwood or river birches, look more brilliant.