Brandon Kennedy on Instagram: "Having a higher body fat percentage, such as 25% compared to 10%, can negatively impact muscle growth. This is due to factors like increased insulin resistance, less efficient nutrient partitioning, lower testosterone levels, higher estrogen levels, and increased inflammation - all of which can hinder muscle protein synthesis and recovery. The key takeaway is that staying lean year-round, rather than allowing body fat to climb too high during a bulking phase, is im