Welcome to the forum!!!
Directly from a post surgery lipo guide:
"Some surgeons recommend that you massage the treatment areas to prevent scar tissue build up and lessen the chance of dimples and dents. Some surgeons insist that if you do not massage natural scar tissue formation will form within the "tunnels" created by the cannula and will begin to contract and lump up pr pull your connective tissue and superficial fat down with it creating undesirable surface irregularities. Patients are usually instructed to massage beginning at a week post-operatively and for about 15 minutes a day. Vigorous massage is said to prevent fibrous bands of scar tissue to contract around your existing fat and will also help with edema (swelling)."
What do I think? In men it is not always necessary. But some say better safe than sorry!
Swelling time varies from person to person.
I am an unpaid volunteer super moderator. I receive no remuneration from this site. Although I am a medical professional, any recommendations, statements, advice, or opinions I provide are mine, and mine alone. Consult carefully with the medical professional of your choice. All statements, recommendations, opinions, and advice expressed by me are mine personally – independent of the site and made as a forum member only – and do not necessarily reflect those of PlasticSurgerySpot.com.