Appealing to those who follow the latest fitness trends as well as those who count shopping as cardio, MarketStreet Lynnfield, the North Shore’s leading outdoor destination for shopping, dining and entertainment, announces the return of its popular seasonal outdoor fitness series, FIT at MarketStreet. The weekly workout series, which returns for a sixth season and saw over 2,000 total attendees last year, will welcome fitness enthusiasts this year on Sundays 10:00AM – 11:00AM and Thursdays 6:30 AM – 7:30 AM…