I had this surgery done back in the days, and waited three months for full recovery. It does not seem like much, especially considering the small scale of the operation, but the problem is that it consists in closing up the veins down there, and letting new ones develop. When you work out, you increase the blood flow, which may damage the veins, or open up the old ones. In fact, I would feel accute pain there when I did something physically demanding. But this is also quite personal. Some people recover faster. Make sure to wear a tight underwear, which will not allow much movement of the testies when you train and walk around – this helps with recovery.