Firewall Fitness is a CrossFit gym with an incredibly positive, encouraging, and supportive environment. The community is full of welcoming, non-judgmental, and supportive people. The coaches are knowledgeable, well-educated, and great, taking time to ensure members are comfortable and never challenged beyond their limits. The facility is clean and well-maintained. With many classes to choose from, the fun and energizing format makes working out enjoyable and not a chore. It is an excellent asset to Holliston, inclusive to families, and highly recommended for anyone trying to better themselves, especially those new to CrossFit.