Diet trends and exercise fads — ephemeral, to say the least. But some methods actually work. Case in point: Helena Collins’s Synergistics Personal Training Studio (9 Newbury Street, Boston, 617.266.0200), celebrating its 10th anniversary this year. In honor of the milestone, Collins is offering free Life in Synergy fitness evaluations (regularly a $90 value; reservations are required), a comprehensive assessment of how your muscles work together and what that means for your overall health and fitness. (You can ignore stress-inducing numbers like weight and measurements.) Over the course of an hour, you’ll be observed, tested, and, in some cases, questioned on your alignment, flexibility, strength, and lifestyle; from there, you’ll get advice on achieving equilibrium and tips on how to get into your skinniest pair of jeans in no time. And the Synergistics excitement doesn’t end there: Collins debuts her Life in Synergy Studios, featuring a fun selection of classes, early this fall on Boylston Street in Back Bay.
