Denver Broncos safeties John Lynch and Hamza Abdullah are accustomed to hitting guys pretty hard.
They have a newfound respect for boxers now after taking up the sweet science in the offseason, along with receiver-returner Quincy Morgan.
Lynch decided to add six weeks of boxing to his winter workout regimen to refresh his mind and body as he prepared for his 15th season in the NFL. Abdullah and Morgan followed suit in the summer, and all three say it's something that will be a permanent part of their strength and conditioning programs.
Lynch says he doesn't take any breaks because you can't if you want to stay in shape at this altitude.
Lynch said the boxing helped his footwork and his handwork.