Active fabrics, garments, and materials

A functional fabric comprising:

• a single continuous heterogeneous filament arranged in a pattern comprising a plurality of interlocking or interwoven filament segments, the single continuous heterogeneous filament comprising:
• a plurality of passive segments each comprising a passive material;
• and
• a plurality of functional segments each comprising a functional material that is different from the passive material;
• wherein the plurality of passive segments and the plurality of functional segments are distributed along the length of the single continuous heterogeneous filament, and wherein the knit pattern includes at least one functional region defined by the plurality of functional segments and at least one passive region defined by the plurality of passive segments.

A functional fabric comprising:

• a plurality of heterogeneous filaments arranged in a pattern comprising a plurality of interlocking segments;
• wherein individual ones of the plurality of heterogeneous filaments comprise at least a first segment comprising a first material and a second segment comprising a second material different from the first material;
• and
• wherein at least a first one of the plurality of heterogeneous filaments has a material composition different from at least a second one of the plurality of heterogeneous filaments.