I'm not agym.go-er or a trainer.. aerobic workouts. I lost 30kg over 12months just by walking 10000 purposeful steps a day and doing 2 rounds of interval training (HIIT) a night. Once my fitness came back/got some fitness, I started introducing weights... and more importantly, I watched what I ate. Specifically, i stopped all sometimes foods and stopped eating bread. This worked for me. But you can't go from little to no exercise tomall the exercise. Work up to it