Watching Ichigo train isn't exactly something Orihime's had the luxury to do in the past year and a half, so doing so now is something of a treat for her. She'll just be on the sidelines, watching him work out, holding a towel and a drink for whenever he gets ready to rest.

Also, although the drink is a 'sports drink' she made, so while it's refreshing, it's probably made of spinach and rutabaga.