The Only Arm Workout You Need This Summer

By Jordan Shakeshaft for Life by Daily Burn Photo: Ryan Kelly / Daily Burn We all have that friend. The one with the Michelle Obama arms that photograph well from every angle. And if you've ever met NYC-based trainer Dara Theodore, she is that friend. Lucky for us, the Daily Burn 365 trainer and walking gun show (lovingly referred to as "Armageddon") is spilling a few of her best-kept strength secrets. Scroll down to also snag the 15-minute arm workout she swears by -- no...