Train like an
athlete. Not a gym rat.

First session includes a full movement assessment + program build.

0+
years coaching
0+
clients programmed
1:1
every session
Boston
born and raised

The Method

Six Disciplines. One Outcome.

Most programs plateau because they only train one thing. David builds your program across all six — targeting your weak points, accelerating your strengths, and pushing your overall fitness to a level most guys never reach on their own.

Olympic
Kettlebell
Rotational
Calisthenics
Sprints
Long runs

Who this is for

The person who wants
an actual edge.

David works with Boston-area lifters, runners, and weekend competitors who are done guessing and want a coach who programs every block on purpose.

Outdoor strength training with the Boston skyline
Boston · outdoor blocks built into every program
  • You're a Boston professional who wants to look strong AND move well.
  • You've plateaued on a generic powerlifting or bodybuilding split.
  • You want a deadlift PR without your back hating you for a week.
  • You can run a 10K but feel like you'd snap in a kettlebell class.
  • You're past 35 and refuse to train like you're past 35.
  • You want a coach who will actually program your nutrition, not just guess.
David Langenthal — personal trainer in Boston

About David

A decade coaching
Boston's hardest workers.

Davidgrew up training in Boston and never left. He's coached collegiate athletes, post-rehab clients getting back to the platform, marathoners shaving minutes, and a lot of busy professionals who wanted to look like they lift and move like they're 25.

His training philosophy is simple: the body is one spiraling system. Heavy lifts, sprints, kettlebells, calisthenics — programmed through the lens of ground force and rotation.

Training out of Back Bay & Cambridge · Boston, MA

B.S. KinesiologyCSCSRMTFMS+ 3 more

How it works

Three steps to a real program.

01

Book your first session

Pick a time that works. We meet, talk goals, and run a movement screen so the program is built around you — not a template.

02

Get your program

Within 48 hours you'll have a written training block, nutrition guidelines, and clear weekly metrics so you know it's working.

03

Show up. Adjust. Repeat.

We meet 1:1 in Boston for sessions. Programming evolves every block based on your numbers, not vibes.

Power in motion

Watch the method.
Self-recorded, no edit.

Daviddoesn't outsource demos — what you see is exactly how he'll teach it.

Common questions.

Do I need to be in shape to start?
No. The first session is a movement assessment so the program meets you where you are. Plenty of clients start out of shape and rebuild from there.
How often do we meet?
Most clients meet 2–3 times per week. The remaining sessions are programmed for you to do solo. We'll figure out the right cadence based on your goals and schedule.
What kind of session can I book?
Four options: an in-person training session at SHED Southie, a strength consultation (assess + program your lifts), a mobility consultation (movement screen + targeted prep), or a movement session (work the foundations together). Each runs 60 minutes 1:1.
Where do sessions happen?
Primarily out of SHED at 141 Dorchester Ave, Boston. Private in-home and virtual coaching are also available — we'll figure out the right fit on the first call.
Do you program nutrition?
Yes. Nutrition is half the result. You'll get macro targets, weekly check-ins, and a system that doesn't require weighing every meal.
What does it cost?
David will share pricing on the first call. Sessions are 1:1 — no group classes, no shared attention.