Am I too out of shape to start BJJ?

One of the biggest misconceptions is that you need a baseline level of fitness before stepping onto the mat. The reality is that BJJ-specific conditioning can only be built by doing BJJ. Running on a treadmill does not prepare you for the unique physical demands of grappling. During your first few weeks, you will gas out quickly, and that is completely normal. Experienced practitioners also got winded when they started. Focus on learning the movements and breathing properly rather than trying to keep up with everyone. Most instructors understand that new students need time to build their conditioning and will not push you beyond your limits. Within a few months of consistent training, you will notice dramatic improvements in your cardiovascular fitness, flexibility, and functional strength.