Marcus Tewksbury, MSM (born February 7, 1968) is a Canadian former competition swimmer. He is best known for winning the gold medal in the 100-metre backstroke at the 1992 Summer Olympics. He also hosted the first season of How It's Made, a Canadian documentary series, in 2001. Tewksbury was awarded the Meritorious Service Medal (Civil Division) in 1993 for being a "motivational speaker and a gifted athlete." Debbie Muir is an internationally respected leader and one of Canada’s greatest coaches. She is an expert in creating high performance environments where individuals, teams, and organizations achieve their best results. Debbie draws from her international experience and education background to design inspiring training programs that equip people with practical tools they need to succeed.