Tiffany Rothe workouts

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Hi, i want to go from 154lbs to about 130lbs. i have started eating healthy and try to intake 1500 calories. can you lose weight by purely doing tiffany rothe workouts alone? i've started doing her workouts last week for an hour for 6 days. do you think i can reach her goal by just doing her workouts? i can't afford to go to gym, and is there other exercises i should be doing? have you guys tried her workout and how long did it take you to see results?