Instruct: Classify Amazon reviews into positive or negative sentiment
Query: ouch where did those muscles come from

i have been working with weights for 4 years. trying diversity i was told will increase your muscle tone. this is true. when i did the bootcamp videos this week, i felt muscles worked at a different angle was much more intense. it was good to feel the musles work. it was an excellent team of three that complimented eachother. they are fun and i loved the little comments througout the video (lois lanes and supermans). it was a workout at a great pace for beginners and advanced people. the pace was perfect. thanks again