3. Go for a long walk

Source: flickr
Waterfront Trail
The Waterfront Trail extends from Cornwall all the way to Niagara-on-the-lake, passing though Mississauga along the way. In total, the trail is over 740 kilometres long.
The section of the trail that runs through Mississauga sits along the lakefront in Port Credit. It passes through both residential and commercial areas.
The trail is a great place for walking, cycling, skateboarding and inline skating. If you have time, you can head east along the trail into Toronto, or go west to Oakville.