These are the rules on Body Magic:
To achieve your bronze Body Magic award, you’ll need to record 45 minutes of activity each week (over at least 3 days) maintained for 4 weeks. Every activity that you enjoy for 5 minutes or more counts.
To achieve your silver Body Magic award, you’ll need to record 90 minutes of activity each week (over at least 3 days) maintained for 4 weeks. Every activity that you enjoy for 15 minutes or more counts.
To achieve your gold Body Magic award, you’ll need to record 150 minutes of activity each week (over at least 5 days) maintained for 8 weeks. Every activity that you enjoy for 15 minutes or more counts.
You can also go for a 'platinum' award which is 2 consecutive gold awards
I do SW online so not sure how you get your awards at class- but if you give your logs to the consultant you should get an appropriate 'sticker' based on the above
Good luck!