Updated on February 1, 2021 at 11:31 am The city of Boston entered Phase 3, Step 1 of Massachusetts' COVID-19 reopening process, Monday, meaning gyms, movie theaters and other businesses are able to open their doors amid positive trends in the city's coronavirus data. The move is possible because COVID-19 case data has been moving in the right direction since a spike following the holiday season, Boston Mayor Marty Walsh said during a Monday press conference. "Throughout the pandemic, certainly we've taken a very cautious approach here in the city of Boston. We only move forward with reopening if public health experts say it's safe," Walsh said. "In recent weeks we've seen some improvements and our COVID numbers - that's why we're moving into Phase 3, Step 1 today."