Lewandowski is the author of On Boxing: Critical Interventions in the Bittersweet Science.

The study is a work in the philosophy and sociology of combat sport, and was inspired in part by the years Lewandowski spent training at a local Kansas City boxing gym, aptly called Authentic Boxing. 

The gym is located in Kansas City's West Bottoms, a post-industrial area immediately to the west of downtown Kansas City, Missouri. Once home to Kansas City Stockyards, this area is one of the oldest districts of the city. It's rich history was also marked by the rule of Jim and Tom Pendergast, political bosses who controlled much of Kansas City's politics from 1925-1939.

Both amateur and professional boxers train at the gym. Training consists of a combination of shadow boxing, strength and conditioning drills, bag work, and designated weekly sparring sessions.

Lewandowski has photographed the area, and he has also used his time in the gym as the basis for his teaching devoted to boxing and urban culture.

Additionally, Lewandowski briefly spent time training and doing ethnographic research at Box Club Žižkov, a boxing club in an historically Roma district in Prague.

Lewandowski currently trains in boxing and Muay Thai at Chute Boxe Kansas City. 

Lewandowski has argued for much needed reforms in the sport of professional boxing, and has led public discussions of boxing and American culture, including a film screening of Thrilla' in Manila during his time as a Fulbright Distinguished Chair in the Czech Republic: