you can weigh them or if u already know how much they weigh . and then use net calorie counters or smartphone app to determine how much cals they have in a 100 g or oz . and then u figure it out .
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i used to do cardio for 3 hours 4 times a week when i was 200lbs and really enjoyed it , but my gym back then had tv beside the elipticals , so i watched few gd movies and tv shows
now if i watch...