The term for a gradual increase in exercise intensity over time is known as progressive overload. This principle is essential in any fitness regimen as it allows the body to adapt and improve by consistently challenging its limits. By incrementally increasing weight, duration, or complexity of workouts, individuals can enhance their muscular strength, endurance, and overall fitness levels. Progressive overload prevents plateaus and promotes continuous gains in physical performance. Notably, it should be approached carefully to minimize the risk of injuries and ensure a balanced fitness plan.