Lightweights Feel Too Easy: If your dumbbells or barbells are a breeze to lift, it might be time to increase the resistance. You should be feeling challenged, not comfortable.
No Muscle Soreness: Muscle soreness is a sign of muscle growth and repair. If you're not experiencing it, you may not be lifting heavy enough to stimulate growth.
Plateauing Progress: If you've hit a plateau in your strength gains or muscle development, increasing the weight can break through this stagnation.
Too Many Reps: If you're easily hitting 20+ reps without breaking a sweat, it's time to up the weight. Aim for a weight that lets you do 8-12 reps with good form.
Short Workout Durations: If your workouts are over in a flash, it could be a sign that you're not challenging your muscles enough. Heavier weights can extend your workout duration and enhance results.