Understanding the Four Phases of Your Cycle
For most of us, the menstrual cycle has long been taught as a monthly inconvenience rather than the intelligent, rhythmic system it truly is. Yet your cycle is one of the body’s most powerful internal guides. It influences your energy, emotions, creativity, metabolism, communication style, and even how grounded you feel in your skin.
Your cycle is always communicating with you.
Through shifts in energy, cravings, clarity, creativity, sensitivity, and rest.
The more you understand these changes, the more supported, balanced, and connected you feel.
Here is a simple, grounded guide to the four phases of the menstrual cycle and how to support yourself through each one.
1. The Menstrual Phase (approx day 1-7)
Your inner winter
This phase begins on day one of bleeding. Hormone levels drop and the body moves into repair mode, asking for warmth, rest, and softness.
How you may feel
More inward, reflective, slower. Your intuition deepens and your body may feel more sensitive to stimulation, friction, and fabric.
The science behind this phase
When pregnancy doesn’t occur, oestrogen and progesterone fall, signalling the body to shed the uterine lining.
As this happens:
Prostaglandins rise, causing the uterus to contract, which is why cramps, back ache, or fatigue may be stronger.
The body shifts energy toward repair and regeneration, so it is normal to feel slower.
Lower estrogen can make both skin and emotions feel more sensitive, heightening your need for gentle fabrics, warmth, and calm.
Your biology is guiding you inward during this time, inviting rest and softness.
Supportive practices
Prioritise rest when possible
Slow, grounding movement
Warm, mineral rich foods
Magnesium, hydration, and gentle nervous system support
Skin friendly, breathable fabrics to reduce irritation
How Flow supports this phase
Flow Intimates organic bamboo period underwear is naturally breathable, hypoallergenic, PFAS free, and irritation free, helping the skin stay calm when sensitivity is highest. Our high waisted pocket briefs also hold a lavender heat pack, offering natural relief during cramps.
2. The Follicular Phase (Approx Day 6-13)
Your inner spring
The follicular phase begins once bleeding tapers. Hormones start to rise again, bringing a renewed sense of clarity, creativity, and expansion.
The science behind this phase
As oestrogen increases, the brain and body shift into growth mode:
Follicle stimulating hormone helps mature an egg.
Rising oestrogen supports energy, motivation, and cognitive sharpness.
Vaginal pH becomes more balanced as cervical fluid increases.
The nervous system becomes more resilient and upbeat.
This is a time of natural renewal and upward movement.
How you may feel
Energised, creative, open to new ideas
More social or outgoing
Physically lighter and more comfortable
Supportive practices
Begin increasing movement intensity
Try new routines or creative projects
Nourish with fresh, vibrant foods
Support hydration and cervical fluid with minerals
How Flow supports this phase
Breathable bamboo keeps you feeling fresh as activity increases.
For light flow at the end of your bleed, the Lace Thong or Everyday Brief offers softness without bulk.
3. The Ovulatory Phase (approx day 14)
Your inner summer
Ovulation is your peak energy point. Hormones rise to their highest levels, bringing confidence, vibrancy, and natural radiance.
The science behind this phase
A surge in luteinising hormone triggers ovulation. Oestrogen peaks, boosting:
Libido and natural lubrication
Mood stability and social connection
Skin glow due to increased collagen and hydration
Energy output and physical strength
Your body is biologically primed to connect and communicate.
How you may feel
Confident, expressive, radiant
Physically strong and energised
More outward facing and connected
Supportive practices
Enjoy dynamic movement or strength training
Eat antioxidant rich foods
Prioritise hydration
Lean into social connection and expression
How Flow supports this phase
As discharge increases during ovulation, breathable bamboo keeps you fresh and balanced. The Everyday Brief or G-String offers light, comfortable protection without disrupting your rhythm.
4. The Luteal Phase (Approx Day 15-28)
Your inner autumn
After ovulation, the body prepares for either pregnancy or menstruation. Progesterone becomes dominant, inviting slowness, grounding, and deeper self-awareness.
The science behind this phase
Progesterone rises to stabilise the uterine lining.
During this time:
Metabolism increases, prompting cravings for dense or warm foods.
Body temperature rises, making breathable fabrics essential.
Serotonin may dip at the end of this phase, influencing mood and sensitivity.
PMS symptoms may appear if progesterone is low or oestrogen is high.
This is a time of transition inward.
How you may feel
More sensitive to stress or stimulation
A need for routine, comfort, and grounding
Slightly warmer or more easily irritated physically
Supportive practices
Prioritise stable blood sugar
Choose grounding movement like Pilates or walking
Support mood with magnesium and B vitamins
Create space for rest and gentleness
How Flow supports this phase
As your body warms and becomes more sensitive, bamboo’s breathability reduces irritation and overheating.
Our high waist styles offer comfort and security as you transition toward your next cycle.
A Note on Variability
Every woman’s cycle is unique.
Shorter cycles will shift these days earlier, and longer cycles will stretch them.
The pattern stays the same:
Bleeding → Rising energy → Peak energy → Slow down → Bleeding again.
Moving Through Your Cycle With Awareness and Ease
Your menstrual cycle is not just a monthly pattern. It is a living, intelligent rhythm that shapes your mood, metabolism, energy, focus, and capacity. When you honour each phase, you create more ease in your life.
More balance.
More intuition.
More self trust.
Flow Intimates is designed to support you through the entire cycle with hormone friendly underwear that is soft, breathable, sustainable, PFAS free, and made with natural fibres that work with your body rather than against it.
Comfort for your bleed.
Breathability for your rise.
Ease for your peak.
Support for your slow days.
Discover comfort that moves with your cycle.
Explore our organic bamboo period underwear.
