Topic Explanation:
The forum topic is about someone seeking advice on joining a Pilates or Yoga class after surgery to prevent developing a hernia and achieve a flatter stomach.

Advice and Insights:
- Start off with easy exercises and stay within your own limits, especially considering the risk of hernias with stomas.
- Pilates and yoga are safe exercises to do with an ostomy, and building up core muscles can help prevent developing a hernia.
- There is a well-qualified instructor with an ileostomy who teaches online Pilates classes, and she also wrote the Bowel Cancer Recovery Toolkit.
- The instructor's name is Sarah Russell, and she offers online classes for all levels, including post-surgery, foundation, and intermediate/advanced.
- It's important to go at a comfortable pace and not overdo it when starting yoga or Pilates.
- Another member with a urostomy is also interested in strengthening their core and would like the instructor's name.

Conclusion:
N/A