NASS FIT
Prenatal Journal:
First Trimester
A gentle guide to understanding, supporting, and trusting your changing body.
NASS FIT / Trimester 1

Welcome

The first trimester is the beginning of one of the most incredible transformations your body will ever experience. Even though many of the changes are invisible, your body is already working around the clock to support your growing baby.

This guide will help you understand what's happening inside your body, how to support yourself during these early weeks, and why caring for yourself now lays the foundation for a healthier pregnancy ahead.

This guide is for general wellness and educational purposes and is not medical advice. Always consult your healthcare provider before beginning any exercise program during pregnancy.

NASS FIT / Trimester 1

How you may feel

Some days you may feel
excited.
Some days you may feel exhausted.
Some days you may wonder if everything you're experiencing is normal.
It usually is.
NASS FIT / Trimester 1

What's Happening With Your Baby

Your baby's major organs — brain, spinal cord, heart, and tiny limbs — begin to develop. This is one of the fastest periods of growth in all of pregnancy.

Every week brings incredible changes.

NASS FIT / Trimester 1

What's Happening With Your Body

Your belly may not look different yet, but your body is already adapting. You may notice:

fatigue nausea breast tenderness bloating frequent urination mood changes food cravings & aversions
👌

These symptoms are common because your hormones are rapidly changing to support pregnancy. Every pregnancy is unique — yours doesn't have to look like anyone else's.

NASS FIT / Trimester 1

Your Body
Is Working Hard
Behind the Scenes

The first trimester often surprises women because the biggest changes happen before anyone can even see them.

Blood volume is increasing.
Your uterus is expanding.
Hormones are rising quickly.
Metabolism is adapting.
Your cardiovascular system is preparing.

Feeling tired doesn't mean you're doing something wrong. It often means your body is doing something incredible.

NASS FIT / Trimester 1

Gentle Reminder:
Rest

Rest isn't being lazy.
It's supporting one of the hardest jobs your body will ever do.

NASS FIT / Trimester 1

How to Support Your Body

Small daily habits make a big difference.

🥗
Nourish Yourself

Focus on nutrient-rich meals. Don't aim for perfection — aim for consistency.

💧
Stay Hydrated

Water supports circulation, digestion,
and healthy pregnancy changes.

😴
Prioritize Sleep

Your body is working 24 hours a day.
Give it the recovery it deserves.

🚶
Keep Moving, Gently

It strengthens, reduces stiffness, improves circulation. Even a short walk counts.

NASS FIT / Trimester 1

Movement Matters

One of the biggest misconceptions about pregnancy is that you should stop exercising. In reality, appropriate movement can help you feel stronger, improve posture, reduce aches, and prepare your body for the months ahead.

The key is choosing exercises designed specifically for pregnancy — not simply modifying your regular workouts. That's why following a trimester-specific program helps you stay active safely.

💪You don't have to stop — just adapt.

NASS FIT / Trimester 1

Weekly Wellness Checklist

NASS FIT / Trimester 1

Did You Know?

Your body begins changing long before your bump appears. Hormones start affecting your joints, posture, circulation, and energy almost immediately. Listening to your body is one of the healthiest habits you can build.

Fatigue is one of the most common first-trimester symptoms because your body is investing enormous energy into your baby's early development. Rest is productive.

NASS FIT / Trimester 1

Questions
We Hear Most

Is it safe to exercise?

For most healthy pregnancies, yes — but your workouts should suit your stage of pregnancy. With any medical concerns, consult your healthcare provider first.

Is nausea normal?

Yes. Many women experience nausea, food aversions, or changes in appetite during the first trimester. Small, frequent meals and staying hydrated may help.

What if I don't feel like exercising?

Listen to your body. Some days a short walk or gentle stretching is enough. Consistency matters more than intensity.

NASS FIT / Trimester 1

A Beautiful
Beginning

Your pregnancy is more than a countdown to meeting your baby. It's a season of growth, strength, and learning to trust your body in new ways.

Every nourishing meal. Every walk. Every stretch. Every moment of rest. Every kind choice becomes part of the foundation you're building for the months ahead.

Take this journey one week at a time — you're already doing something extraordinary.

Expecting mother with her daughter
NASS FIT

Prenatal Programs
by Nastya Nass

Dancer, coach, mom of three. I trained through all three pregnancies and rebuilt after each birth. Those years became the NASS FIT programs: before, during and after pregnancy.

Explore programs
00 / 13