You guys are nuts for even considering this.
Actually the majority of professional body builders and those that appear to be professional are on year round, so they are not nuts,
This is also true for professional athletes – simply on 24/7 365 days a year.
Some people are just not very well informed or un- aware of reality.
The biggest side affects are not really side affects, as you age, gains become increasingly difficult.
Your first cycle you may add 15-20 lbs of muscle, your second 5-10 lbs of muscle,
After 10 years it is almost impossible to gain 15-20 lbs of muscle, gear, genetics, training, rest, diet all considered.
As you creep up on 60, saving your muscle is 90 percent of what people are doing.