Is Pilates Safe in the First Trimester? What You Need to Know (Weeks 1–12)

The short answer: yes. For most low risk pregnancies, Pilates is safe to continue — or start — in the first trimester, as long as you get the go-ahead from your doctor or midwife first.

Physically you may not look too different during the first trimester , so it's easy to assume nothing needs to change. But a lot is happening under the surface: your blood volume is increasing, your core temperature runs slightly higher, and fatigue and nausea can hit at any point in a session. None of that makes Pilates unsafe — it just means the goal shifts from "push harder" to "move well and listen closely."

What to keep doing

Most of a typical Pilates class translates well into early pregnancy. Standing work, seated postural exercises, gentle spinal mobility, breathing work, and resistance training with the reformer or mat are all generally fine at this stage. If you already have an established practice, the first trimester is usually not the time to stop — but it is the time pay closer attention to how you feel and adjust accordinly.

What to modify or skip

• Pushing through exhaustion. First-trimester fatigue is real and hormonal, not a fitness failure — shorter or gentler sessions on low-energy days are the right call, not a compromise.

• Anything that makes you feel worse! During my first pregnancy I was able to workout a little, but during my next two I really didn't do anything until my second trimester!

Signs to stop and call your doctor or midwife

Stop exercising and get in touch with your care provider if you experience vaginal bleeding, dizziness or fainting, chest pain, severe headache, calf pain or swelling, or unusually painful contractions. These apply throughout pregnancy, not just the first trimester, but they're worth knowing from the very start.

When a structured programme makes sense

Because so much changes physically between the first and second trimester, most trimester-specific Pilates programmes — including Grace's — are designed to start from week 14 onward, once the early-pregnancy cautions ease and a more consistent structure makes sense. If you're in the first trimester now, the best approach is to just keep doing what you're doing as your energy levels allow — and then moving into a dedicated second trimester programme once you're past week 14.

For the fuller picture across all three trimesters, see the main guide: Is Pilates Safe During Pregnancy? A Trimester-by-Trimester Guide.

This article is for general information and isn't a substitute for personalised medical advice. Always check with your doctor or midwife before starting or continuing exercise in pregnancy, especially if you have any pregnancy complications.