Increase the intensity by adding interval training or high-intensity interval training (HIIT) into your workouts. This will push you to your limits and help you improve your cardiovascular endurance. </s>
Incorporate resistance training into your routine with weights, bands, or bodyweight exercises. This will help build muscle and increase the difficulty of your workouts. </s>
<s>[INST] How can I make my workout routine more challenging? [/INST] 