Final answer:
When encountering a tender spot while foam-rolling the piriformis, Daniel should stop foam-rolling immediately.
Step-by-step explanation:
When encountering a tender spot while foam-rolling the piriformis, Daniel should stop foam-rolling immediately. Foam-rolling can be uncomfortable, but if it becomes painful, it's important to listen to your body and avoid causing further injury. Applying ice to the tender spot is not recommended for foam-rolling, as it is primarily used for reducing swelling and pain in acute injuries.