This 90-day, three-phase blueprint for hardgainers focuses on hypertrophy through compound lifts, a consistent 300–500 calorie daily surplus, and prioritizing recovery, aiming to add significant weight. Key strategies include progressive overload, a 3-day full-body split followed by an upper/lower split, and utilizing liquid calories to combat appetite fatigue. For more detailed training and nutrition strategies, search for "Bulk Up Fast The Skinny Guy's 90-Day Blueprint."