Pat is the founder of TargetWeightCalculator.com, a free body composition and weight planning resource for people setting realistic fat loss and recomposition goals. He has researched and written extensively on body fat measurement methods — Navy circumference formulas, skinfold calipers, bioelectrical impedance analysis, DEXA scans, and emerging AI-from-photo tools — comparing accuracy data across published validation studies. His work focuses on translating body composition research into practical guidance: which method fits which use case, what published error margins mean for individual readings, and how to set weight goals that account for lean mass preservation. Available for commentary on body fat measurement accuracy, weight loss planning, smart scales and BIA, AI body compositi...