Remove the fava beans from the pods.
Bring a pot of water to a boil and add the fava beans. Let them cook for 3 minutes, drain the hot water and rinse the fava beans under cold water.
Remove the skin from all the fava beans and put the fava beans in a salad bowl.
Add the lemon juice, the extra virgin olive oil, the garlic, the arugula and salt & pepper, as desired. Toss well.
Add the pecorino cheese and toss gently. Serve chilled.