Food, fitness and your cycle

Have you ever noticed that your mood, energy, and appetite seem to change throughout the month? You’re not imagining it and you’re definitely not alone. These changes are a normal part of the menstrual cycle and are caused by natural hormonal fluctuations that affect how your body feels and functions in everyday life. (1) One week you might be craving chocolate, another week you might need a little more rest. Both are your body’s way of asking for support.

Since no two cycles (or bodies) are exactly the same, researchers have begun to take a closer look at how the different phases of the menstrual cycle and the associated hormonal changes can affect diet and exercise needs. (3,7) Although the research is still developing, the early findings offer some interesting insights.

Read on to learn what cycle synchronization is and how tuning in to your cycle can help you better understand and support your body.

What is cycle synchronization?

Cycle synchronization first gained attention in 2014, when a functional nutrition expert introduced the idea of ​​aligning diet, exercise, and workload with perceived energy changes during the menstrual cycle. (8) At its core, it has a great foundation: encouraging women to become more aware of their cycle and giving them permission to tune into their feelings.

But like many things that have good intentions to begin with, social media has spread false hope and misinformation about this trend that can do more harm than good.(2) That’s why we’re here to set the record straight. While cycle synchronization can have benefits, not all of them are applicable to every woman. It’s more about awareness and personalization to your cycle, not following a rigid set of rules.

Benefits of matching your diet and exercise to your cycle

There is little research on the clinical benefits of balancing diet and exercise with your cycle. But because the data isn’t quite there yet, that doesn’t mean becoming more aware of your cycle and your feelings isn’t effective. (3, 7) Keep this in mind when thinking about cycle syncing for yourself.

Some health experts suggest that tailoring your diet and exercise to your cycle can provide benefits such as: (1,3)

• Improved mood
• Reduced intensity of common menstrual symptoms such as cramps and bloating
• Better use of higher energy phases
• More clarity about when to prioritize breaks over harder effort
• More conscious nutritional decisions in times of increased cravings

Understand the phases of your cycle

The menstrual cycle is complex, but that doesn’t mean it has to be confusing. Melissa Jaeger, RD, LD, Director of Nutrition at MyFitnessPal, shares, “When you understand what’s happening in your body, these changes in energy, cravings, and appetite can seem far more manageable. (1)” For simplicity, we divide the cycle into two phases: the follicular phase and the luteal phase.

Understanding the hormonal changes that occur during each phase will give you a clearer insight into why your energy for exercise and your appetite may vary throughout the month.

Phase 1: The follicular phase

The day your period begins due to ovulation, when an egg is released from the ovaries, is called the follicular phase.

stage	Approximate daily range	What happens	Hormonal changes	Energy levels
Menstruation (also known as early follicular phase)	1-7	The bleeding begins	Estrogen and progesterone are low	Low
Follicular phase (also known as late follicular phase)	8-13	The uterine lining begins to thicken	Estrogen begins to rise and peaks when ovulation begins	As estrogen levels begin to increase
Ovulation (also known as late follicular phase)	14 (takes about 16 to 32 hours)	An ovary releases an egg	Hormones increase, including estrogen, luteinizing hormone, and follicle-stimulating hormone	The energy level reaches its peak

Sources: (1,3)

What to eat during the follicular phase

• During your period:
  • Consider eating energy-dense foods high in iron to compensate for blood loss during menstruation, such as: E.g. dark leafy vegetables with vitamin C foods to promote absorption and lean animal proteins.(1)
  • Try adding omega-3 fats like salmon, nuts, and seeds to reduce inflammation and cramps.(1)
• Late follicular phase:
  • Consider eating energy-dense foods to get more energy (and possibly more workouts). (1) Whole grains and lean protein can contribute to glucose supply and support muscle repair.(9)
  • Consider focusing on this foods rich in fibersuch as cruciferous vegetables and whole grains to balance high estrogen levels. (1,4)
  • Try to reduce your intake of added sugars. (1,4)

Follicular phase training

• During your period:
  • Energy may be low, so you may not be ready for a strenuous workout. Tune into your body and give yourself rest and recovery, which can mean slow walks, gentle movements like yoga and gentle stretching, and rest.(1,6)
• Late follicular phase:
  • When your period ends, hormones begin to rise, which can lead to higher energy levels. If this is the case, you might consider doing more vigorous exercise, such as running, group fitness HIIT classes, and other cardio exercises.(1,6)

Important point to remember

Research suggests that energy intake may decrease during this phase, but it is still important to eat enough nutrient-dense foods to support your activity levels.(5) Logging your meals in MyFitnessPal can help you spot trends and understand how well you’re meeting your daily nutritional needs.

Phase 2: The luteal phase

When ovulation ends, your luteal phase begins until your next period begins.(1,3)

stage	Approximate daily range	What happens	Hormonal changes	Energy levels
Luteal phase	15-28	The uterus prepares to receive the egg. Towards the end of this phase, menstrual symptoms such as cramps, fatigue and cravings may increase	Progesterone is at its highest, estrogen fluctuates	Energy levels may fluctuate and be lower at the end of this phase

Sources: (1,3)

What to eat during the luteal phase

Increased cravings are normal during this time. Research shows that some women tend to consume more calories during the luteal phase due to hunger.(5) When planning your meals, consider the following nutritional points:

• Apply the rule of 3: protein, fat and fiber. Make sure your meals and snacks check the boxes for each of these nutrients to keep you satisfied and full with meals.
• Complex carbohydrates support the feeling of satiety and relieve cravings. (10) Opt for foods with natural sources of sugar such as sweet potatoes, bananas and oats.
• Consider Foods rich in magnesium to balance out fluid buildup, like a handful of pumpkin seeds on your yogurt parfait.

Exercises for the luteal phase

Your energy levels may fluctuate a bit, so be prepared for this and plan your workouts accordingly. Some days a moderate-intensity cardio day may feel good, while other days strength training may be a priority.(6) Interestingly, little difference was found between the follicular and luteal phases in those who exercise.(1,3)

Important point to remember

Balance and moderation are key. Focus on building the foundation of your meals with healthy, nutrient-dense foods so you have some flexibility for fun foods like a piece of dark chocolate.

Conclusion

Knowledge truly is power and cycle syncing can be a helpful way to better understand your body throughout the month. Remember: There is no one-size-fits-all set of rules. Every cycle is different and your needs may change from month to month.

Even by experimenting with cycle awareness in the short term, you can see patterns in your energy, hunger, cravings, and exercise—insights you can use to support your long-term goals. Track your cycle with a calendar or app, paired with logging your food MyFitnessPalcan help make these patterns easier to recognize. You can begin to identify trends in energy, hunger, cravings, and exercise so you can make smarter, more supportive decisions that move you closer to your long-term goals.

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