Don't eat within an hour after a workout? This is unfounded. While your body does absorb nutrients more efficiently after exercise, eating carbohydrate-rich staples like rice, wheat, or bread is actually beneficial for muscle recovery, as long as you avoid overly refined sweets.
Carbohydrates, also known as sugars, are the body's primary source of energy. Research has shown that within 30 minutes after a workout, muscles are most receptive to replenishing glycogen, which can minimize muscle stiffness and soreness. Therefore, it's a good idea to replenish with some carbohydrates after a workout, just don't overindulge.
Additionally, many people believe that sweating is necessary for weight loss, and some even wrap themselves in plastic wrap to exercise. In reality, while you might sweat profusely and see a temporary drop in weight, your weight will return to normal as soon as you rehydrate.