For Traditional boot campers The drill Former marine and White House guard Joe Caballero leads 6–7am classes in Wicker Park (meet at Oakley Boulevard and Potomac Avenue) and 6–7pm classes in Old Town (meet at Lincoln Avenue and Clark Street) May through November. Jump in any week for a mix of sprints, boxing, martial arts and jump roping and occasionally yoga and meditation. While sessions run in four-week increments, you can sign up at any time without having to pay for classes you don’t attend. Check out the first two or three days for free before deciding if this one’s for you. Cost $250 for 20 sessions in four weeks; $230 each if you sign up with a buddy