Patrick Schwarzenegger Works On His Muscles As He Exercises With Friends In The Park :    When it comes to staying in shape, Patrick Schwarzenegger tends to take a leaner approach than his father.

The 19 year-old son of Arnold Schwarzenegger and Maria Shriver hit the popular sets of stairs in Santa Monica on Monday morning with two buddies, maintaining the lean figure he showed off on the beach in Maui a few weeks before.