KATY, Texas — By day, Glenn Ayala is a 50-something account manager who spends much of his time behind a desk. But at Rick Rice Park in the early morning darkness, doing pushups and jogging with a 20-pound rucksack on his back, he is known as K9, and he is with his people. One Friday in August, Ayala joined about 20 other men in what they called the pre-dawn “gloom” for the group’s regular workout. They grunted and hooted un-self-consciously, razzing one another and shouting encouragements, using nicknames generated by the group. (Ayala got his because he trains dogs in his spare time.) The members also often gather to pray together and talk, building friendships that have extended into their daily lives: When Ayala separated from his wife, members of the group helped him move. When his relationship with his adult son foundered, they texted him Garth Brooks songs to buoy him. This is F3 — that’s fitness, fellowship and faith — a fast-growing network of men’s workouts that … [Read more...] about For suburban Texas men, a workout craze with a side of faith