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If you’ve ever wondered why some days you feel focused and energised and others feel heavier, flatter or more draining, your hormones might be the reason. Hormones affect your energy levels far more than most people realise, and these shifts are especially noticeable across the menstrual cycle. Understanding how hormones affect your energy levels helps you plan your month with more clarity and less frustration.
Hormones don’t fluctuate randomly. They follow a pattern, and the more you understand it, the easier it becomes to match your routines, workouts and work demands to what your body naturally does well. This doesn’t mean your life has to revolve around your cycle. It simply means you can support yourself in a smarter, more sustainable way.
If you want structured support, you can explore The Hormone Health Blueprint, download the Hormone Health Starter Kit or join the Accountability Club for weekly coaching and gentle accountability. You can also read more about hormones and energy from the NHS and Harvard Health websites.
Your menstrual cycle is divided into four main phases. Each phase brings its own hormonal changes which influence mood, energy, appetite, motivation, sleep and focus. Once you understand how hormones affect your energy levels across these phases, it becomes easier to explain why you feel more capable in one week and more introspective or tired in another.
Hormones: Oestrogen and progesterone are at their lowest
Common feelings: Lower energy, reduced focus, calmer moods, more need for rest
Low levels of both hormones can make energy feel flatter. Many women find they naturally slow down during this phase and prefer gentler exercise and quieter evenings.
Hormones: Oestrogen rises
Common feelings: Clearer thinking, higher motivation, improved mood, better concentration
As oestrogen rises, so does energy. This is often the week when people feel most capable, productive and socially confident.
Hormones: Oestrogen peaks, luteinising hormone rises
Common feelings: High energy, stronger libido, more sociability, sharper focus
This is usually the highest energy point of the month. Many women feel more self assured and more willing to take on challenges during this window.
Hormones: Progesterone rises, oestrogen fluctuates
Common feelings: Lower tolerance for stress, reduced focus, more cravings, disrupted sleep, feelings of heaviness
This is the phase where many people notice their energy dipping or becoming more inconsistent. Understanding how hormones affect your energy levels here can help reduce frustration and improve symptoms like bloating or irritability.

Cortisol is your main daytime energy hormone. It helps you wake up, concentrate and respond to daily demands. When cortisol becomes dysregulated from stress, poor sleep or irregular eating patterns, energy becomes less predictable.
You can read the full blog on how cortisol affects your hormones and practical ways to lower it naturally.
Blood sugar stability is one of the most important factors in maintaining steady energy throughout the month. Sharp rises and crashes in blood sugar can make hormonal symptoms feel more intense. Balanced meals with protein, fibre and healthy fats help regulate blood sugar, which in turn supports smoother hormonal fluctuations.
If you’re unsure how to do this, the blog on how to balance blood sugar for better hormones explains it in detail.
Even when your hormones follow the same monthly pattern, several factors influence how you experience each phase:
These can all affect how hormones affect your energy levels and why your month feels different depending on what’s happening in your life.

You don’t need to plan your life strictly around your cycle, but paying attention to a few habits can make a noticeable difference.
Protein, fibre and healthy fats help stabilise blood sugar and prevent the afternoon crash. Many people under eat protein early in the day, which sets off a low energy pattern later on.
Higher oestrogen levels often support better strength performance. Taking advantage of this phase can help improve energy across the whole month.
Walking, Pilates and yoga can feel much better than intense workouts when progesterone rises. They also help manage cravings and mood changes.
Sleep naturally becomes more fragile in the luteal phase. Keeping lights dimmer in the evening, eating your last meal earlier and reducing late night screen time can help.
These can support nervous system regulation and reduce inflammation. They are also useful when energy feels inconsistent.
The follicular phase and ovulation often feel most natural for challenging or creative tasks. This doesn’t mean you can’t perform well at other times, but it helps if you have flexibility.
Too much caffeine early in the day can increase cortisol and disrupt your natural energy rhythm.
When you understand how hormones affect your energy levels, you can predict your strong weeks, support yourself through lower energy days and feel more in control of your routine. Many women describe feeling calmer and more grounded when they align their habits with their natural rhythm.
If you want deeper support, you can explore The Hormone Health Blueprint, download the Hormone Health Starter Kit or join the Accountability Club for weekly guidance.
© 2020 Copyright Sophie Trotman - Professional Nutritionist London - All Rights Reserved