@ heather
I hope you are aware of the newest research that clearly indicates that physical activity is only a rather small part of effective weight loss? Weight loss can be achieved only with an appropriate diet. Physical activity keeps the muscles in tone, but does not much for losing weight.
Medical professionals recommend a healthy diet, such as any variation of the Mediterranean Diet, in combination with portion control/calorie counting, and moderate physical activity every day, as being the most efficient way to loose weight without jeopardizing ones health as this can be the case with fad diets like Keto!