[Archaea]

First follow medical advice over internet advice.

Second congrats for starting.

Third, it must be a lifestyle change, so do things which you can commit to doing in the future.

Fourth, pick activities which you will enjoy but tend not to injure. Running is a great exercise but tends to injure.

However, races of any kind help one stay motivated to train. Fun is the key and variety helps one keep it fun.

Set the example for your family and save your own life please.