Weight-bearing headwear, components thereof, and methods of use

A weighted headwear comprising:

• a. an elastomeric weighted layer comprising an elastomer and a quantity of weighted bodies;
• and
• b. a conventional hat or cap having a space within it, above a line of fit defined by a user's head, into which fits said elastomeric weighted layer;
• wherein when fit into said space, said elastomeric weighted layer is not visible from a normal field of view of said hat, and wherein said elastomeric weighted layer weighs between about 100 and about 3,000 grams.

A weight-fillable bladder skullcap comprising

• a. an inner wall comprising an outer surface conforming to the shape of the crown of the head of a wearer of said skullcap, and an inner surface;
• b. an outer wall, spaced a distance from said inner wall, comprising an outer surface and an inner surface;
• c. a plurality of spaced apart junctures communicating between said inner wall and said outer wall;
• d. a chamber between said inner surface of said inner wall and said inner surface of said outer wall, said chamber closed along a bottom border by a joining of lower edges of said inner wall and said outer wall;
• and
• e. a sealable opening accessing said chamber.