Measuring body fat percentage can be conducted through several methods, including bioelectrical impedance analysis (BIA), skinfold measurements, and advanced techniques like dual-energy X-ray absorptiometry (DEXA). BIA measures resistance to a low-level electrical current to estimate body composition, while skinfold calipers measure the thickness of subcutaneous fat at specific body sites. DEXA scans provide precise data on body composition, including fat and lean mass. Other indirect methods include waist-to-hip ratio and body mass index (BMI), despite their limitations in accurately assessing body fat.