Feedback can be helpful or not. It can cause your teammates to feel supported or criticized. Make a commitment to give feedback that will be helpful, positive, and well received. Your job is to give feedback that builds people up, not tear them down.
During:
When a teammate needs feedback, make it specific, positive, respectful, and solution-focused. Help them know what to do next instead of dwelling on what went wrong.
After:
Did today's MindRep help you? How did today's MindRep help you? Do you want to own it and make it a consistent part of your training?