Good thing you are working yourself slowly back in shape, and its very smart to talk with your brother in law before training to vigourously.

Igot seriously ill and was out of training for over a year. When I came back my motivation was too high and I could not hold back while running. It ended with me snapping my achilles and I could not walk for a several months.

The idea of eating less to lose weight is kind of fawlty. When we eat less our metabolism drops and a hormone called leptin makes the body store more fat and burn less.

If we eat healthy, and drop sodas and candy, our body will get all the nutrition it needs without ever needing to go really hungry. Plenty of fats especially omega 3) in our diet also help the hormonal systems, in addition to sunshine and heavy workouts- whether lifting, running or throwing.