Zinc stearate is a zinc soap that is known for repelling water. Zinc Stearate is commonly used as a release agent, heat stabilizer and lubricant in the plastics, polyolefin, polystyrene and rubber industry. Zinc Stearate is also used as a sanding additive in wood coatings (lacquers). In cosmetics, zinc stearate is a lubricant and thickening to improve texture. The insoluble salt is made of commercial stearic acid, a type of mild fatty acid that is used as an emollient and lubricant. It is often combined with zinc oxide. Zinc, on its own, is known to have antibacterial and antiviral properties. Appearance of Zinc Stearate
If you are currently overweight and can safely lose 28 lbs, then this is feasible and will likely take between 4 and 6 months. First you'll need to assess how many calories you burn during an interval of exercise on a rowing machine. Most machines will tell you how many calories you've burned during a session. One pound of fat is about 3,500 calories. If you burn 100 calories in 10 minutes of rowing, and you row for 350 minutes a week, then you'll lose 1 pound a week just from rowing. First you should make sure it is healthy for someone of your sex, height, and body type to lose that much weight.
Then you will be ready for a spin class. I would also suggest doing 5 mins on the rower and build that up to 15mins as well. Swimming would also be a good choice but no froggy kicks just scissor style kicks.