From a Jain perspective, safety and non-harm (ahimsa) to all living beings are central. Whether it is okay to do big snowboarding stunts depends on intention, risk awareness, and how your actions affect you and others.

Key points to consider:

• Ahimsa first: If the stunt endangers yourself or others, or causes unnecessary harm, it should be reconsidered. Self-harm is not a goal in Jain practice; prudence and minimizing harm are valued.
• Right conduct (shila): Train properly, use protective gear, and avoid reckless behavior. Build skills gradually and respect your limits.
• Right knowledge and right faith: Make informed choices about risk and safety rather than acting from pride or thrill-seeking.
• Balance and detachment: Spiritual progress in Jainism encourages controlling passions and ego. If pushing for bigger stunts stems from ego rather than genuine safety, it’s better to reconsider.

Practical guidance:

• Wear appropriate safety equipment (helmet, padding, proper bindings).
• Learn and practice with a qualified instructor; progress gradually.
• Assess the environment (terrain, weather, crowd presence) and have a clear plan and bail-out options.
• If a stunt imposes risk of serious injury, choose a safer alternative that still brings joy and skill development without compromising ahimsa.

There isn’t a strict doctrinal ban on extreme sports in Jainism; the emphasis is on non-harm, prudence, and inner restraint. Both Digambar and Shwetambar traditions uphold ahimsa and right conduct, though differences in interpretation exist for many texts; in this context, the core principle remains the same: safety and non-harm guide your choices.

If you’d like, I can share a concise Jain teaching (arth) related to ahimsa and prudent living in everyday activities.