Body Warmer Heat Pad Market Size, Share & Industry Analysis, By Product Type (Disposable Heat Pads, Reusable Heat Pads, and Electric Heat Pads), By Heating Technology (Air-Activated, Chemical, Electric, and Gel-Based), By Application (Pain Relief & Medical Use, Sports & Fitness Recovery, Outdoor Activities, and Personal Warmth/Cold Weather Protection) By End User (Household Consumers, Athletes & Sports Professionals, Healthcare & Medical Facilities, and Outdoor Enthusiasts), By Distribution Channel (Supermarkets & Hypermarkets, Pharmacies & Drug Stores, and Regional Forecast, 2026-2034