Your Follicular Phase Explained And How To Make The Most Of It

The rundown on the follicular phase:

• The follicular phase begins on the first day of your period and continues until ovulation, as your body prepares to release an egg.
• Rising oestrogen levels during the follicular phase may influence energy, mood and motivation, although everyone's experience is different.
• Common follicular phase changes can include increased energy, improved focus, changes in cervical mucus and feeling more socially engaged.
• Supporting your wellbeing during the follicular phase can include eating a balanced diet, staying active, prioritising sleep and paying attention to your own menstrual cycle patterns.

Your menstrual cycle is about much more than your period. While menstruation is typically the most noticeable stage, your body actually goes through different hormonal changes across your cycle which can influence everything from your mood to physical wellbeing¹.

The menstrual cycle has four phases: menstrual, follicular, ovulatory and luteal. In this guide, we’ll explore the follicular phase meaning, what happens during this stage, how long it lasts, the role hormones play, and what you might notice as your body moves through this stage of your cycle.

What is the follicular phase?

The follicular phase is the first stage of your menstrual cycle. It begins on the first day of your period and continues until ovulation. Your period and the follicular phase actually happen at the same time, during the first few days of your cycle. 

During this phase, your body prepares to release an egg. The pituitary gland releases follicle-stimulating hormone (FSH), which signals a group of follicles in the ovaries to begin developing. Each follicle contains an immature egg, and as the follicles grow, they produce increasing amounts of oestrogen. This hormone helps rebuild the lining of the uterus in preparation for a possible pregnancy. Eventually, one follicle becomes dominant and releases an egg during ovulation¹.

When is the follicular phase?

Picture your cycle as four connected phases. The menstrual phase is your period. The follicular phase is the build-up toward ovulation. The ovulatory phase is the release of the egg. And the luteal phase is the wind-down afterwards, leading into your next period. 

In a 28-day cycle, the follicular phase runs roughly from day 1 to day 14. However, cycles can vary from person to person, with some having a longer or shorter cycle. 

A few things worth knowing:

• Day one of your period is also day one of your follicular phase. They start together.
• The follicular phase ends at ovulation.
• Its length can vary more than other phases. The follicular phase is the flexible one; it can stretch or shorten, which is a big reason cycle lengths differ so much between people².

What happens in the follicular phase?

A lot is happening during the follicular phase, even if you can't feel it. Behind the scenes, hormones work together to prepare your body for ovulation.

It starts with FSH, which stimulates the immature eggs in your ovaries to grow and mature into follicles³. FSH has to reach a certain level to get this going. Think of it as a threshold the body needs to cross before the follicles respond⁴.

As those follicles grow, they start producing oestrogen, with levels climbing steadily through this phase⁵. That rising oestrogen does two important things: it helps thicken the lining of the uterus, in preparation for a possible pregnancy. It also supports the development of one dominant follicle, which will release an egg during ovulation³.

These hormonal changes don't just affect the reproductive system. That steady rise in oestrogen can ripple out to influence your energy, your mood, and your mindset³.

Why energy and mood may feel different during this phase

If you've ever noticed a stretch of days where you feel a little more energised, motivated, or social, there may be some biology behind it. As oestrogen levels rise during the follicular phase, some people notice changes in their energy, mood or motivation. While everyone's experience is different, these shifts are thought to be linked to the way oestrogen interacts with the brain⁶. 

Research suggests that rising oestrogen may influence brain chemicals involved in motivation and emotional wellbeing, including dopamine and serotonin.⁶ ⁷ This may help explain why some people report feeling more focused, motivated or socially engaged as they move through this stage of their cycle. 

It's important to remember that there's no "normal" way to feel during the follicular phase. During the follicular phase, mood can vary from person to person, and even from one cycle to the next. Paying attention to your own patterns can help you better understand how hormonal changes may influence your wellbeing over time. 

Follicular phase symptoms

Symptoms of the follicular phase can vary from person to person. These are some of the changes you may notice as oestrogen rises. Some are subtle and some you may not notice at all. 

Here's what some people experience:

• Rising energy levels. One study found that positive moods, including feeling active, cheerful and focused, increased during the late follicular phase. Feelings of fatigue and low mood were also less reported⁸. 
• Improved focus and mental clarity. Some people also found it easier to concentrate and think more clearly during the follicular phase⁸.
• More motivation and sociability. Research suggests that rising hormone levels may influence motivation and the way we respond to positive experiences, which may help explain why some people feel more confident or socially engaged during this stage of their cycle⁹ ¹⁰. 
• Changes in cervical mucus. As ovulation approaches, cervical mucus often becomes clearer, stretchier and more abundant. This is a normal part of the menstrual cycle and helps support fertility¹¹. 
• Mood changes. Some people notice they feel more optimistic or emotionally balanced during this stage of their cycle. Research suggests rising oestrogen may influence brain chemicals involved in mood, including dopamine and serotonin.¹² 

Everyone experiences the follicular phase differently. Some people notice clear changes in their energy, mood or motivation, while others experience only subtle differences. Paying attention to your own patterns can help you better understand how your body changes throughout your menstrual cycle. 

How to support yourself during the follicular phase

Understanding your menstrual cycle isn't about doing everything differently each month. It's about recognising how your body changes over time and finding simple ways to support your health and wellbeing throughout your cycle¹³.

During the follicular phase, some people notice they have more energy or motivation than usual. If that's the case for you, it can be a good opportunity to lean into habits that help you feel your best.

Follicular phase foods

Eating a balanced, varied diet can help support your energy and wellbeing throughout your menstrual cycle, including the follicular phase. While there's no single eating plan for this stage of your cycle, nourishing your body can help support your overall health¹⁴. 

Some foods to lean into¹⁴ :

• Lean protein to help support muscle health and keep you feeling satisfied.
• Fibre-rich vegetables and fruit to help you meet your daily fibre intake.
• Antioxidant-rich foods such as berries and leafy greens.
• Fermented foods like yoghurt, kefir or kimchi as part of a varied diet.
• Wholegrains and other complex carbohydrates to provide a steady source of energy.

Rather than focusing on one particular food, aim for a balanced eating pattern that supports your overall health and wellbeing. 

Lifestyle habits to support this phase

If you notice you're feeling more energised during the follicular phase, you might choose to make the most of it by¹³: 

• Movement or exercise. If you're feeling more energised, this may be a good time to enjoy activities you like, whether that's walking, strength training, yoga or another form of movement.
• Social connection. If you're in the mood to catch up with friends or join a group activity, spending time with others can be a positive way to support your wellbeing.
• Planning and organisation. If you're feeling focused or motivated, you might find it easier to plan your week, set goals or tackle tasks on your to-do list.
• Prioritising sleep and recovery. Quality sleep supports your mood, energy levels and overall wellbeing, so aim for a consistent sleep routine where possible¹⁵.
• Tracking your cycle. Paying attention to how you feel throughout your menstrual cycle can help you recognise patterns and better understand what works for your body over time¹³.

Because mood during the follicular phase can vary from person to person, it's best to find what works for you. You may want to experiment over different phases and see how it feels. 

Understanding your cycle, one phase at a time

The follicular phase begins on the first day of your period and continues until ovulation. During this stage, changing hormone levels prepare your body to release an egg, and some people notice changes in their energy, mood, or motivation along the way.

Every menstrual cycle is different, and your experience won't look exactly like someone else's. Understanding your cycle isn't about following a perfect routine; it's about noticing your own patterns and learning what helps you feel your best throughout the month.

The more you understand how your body changes across your cycle, the more confident you can feel making choices that support your health and wellbeing.

Explore more articles like the lowdown on PMS symptoms and a guide on period pain on the Swisse Wellness Hub.

References:

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