Today marks the 15th day of my journey with the Switch On Diet, and as I enter the third week, I find myself facing a few emotional and physical hurdles. This week includes two scheduled 24-hour fasting days, and honestly, I’m feeling a bit anxious. While I’ve built momentum from the past two weeks, my mindset has felt a little loose lately—especially since I started allowing small portions of carbohydrates during dinner.
Yesterday evening, I found myself nibbling on a few snacks that my husband was enjoying, and later, I had two pieces of chocolate. Normally, I would have resisted, but today, I’m dealing with the start of my menstrual cycle. My body feels achy and heavy, and I’ve been resting at home all day. When I’m on my period, I naturally crave sweet things, and it becomes so easy to let my guard down.
Even though I’ve made such good progress—losing 3kg of body fat while maintaining my muscle mass—I can’t help but worry whether I’ll be able to complete tomorrow’s 24-hour fast successfully. I also wonder: Is it safe or effective to fast during menstruation? Should I take a break instead?

Understanding How Menstrual Cycles Affect Weight Loss
This concern isn’t just mine—it’s one that many women face. The menstrual cycle plays a significant role in how women respond to diet and exercise, and understanding these changes can make a big difference in how we approach weight loss and metabolic health.
Hormonal Fluctuations and Cravings
During the luteal phase—the week before menstruation—progesterone levels increase, often leading to increased appetite and sugar cravings. The body naturally burns slightly more calories during this time, but emotional and physical discomfort can make it harder to stay disciplined.
Is Fasting During Your Period Safe?
Most experts agree that gentle intermittent fasting is generally safe during menstruation, especially if you’re in tune with your body’s signals. However, extended fasts like 24 hours can be challenging. If you’re experiencing fatigue, dizziness, or irritability, it may be wiser to modify or shorten your fast. Listening to your body is essential.
For me, I’m considering adjusting tomorrow’s fast depending on how I feel. If my body needs more rest and nourishment, I’ll be flexible. After all, this is a long-term lifestyle change, not a sprint. Consistency over time is what matters most.

Rest, Recovery, and Realism
Though I wasn’t able to work out today, I’m giving myself credit for staying mindful. Normally, I’d feel guilty about a few snacks or resting on the couch. But now, I see this as part of a balanced lifestyle — one that honors my energy levels and hormonal changes.
Actually I’ve been dealing with lower back disc issues for the past 10 years, which is why I avoid high-impact exercises and heavy lifting. That’s also part of why I started Pilates about five years ago. I’m not always perfect, but I’ve been consistent. I’ve stuck with it. And today, even if I didn’t move much, I know that rest is also part of the process.
Key Takeaways for Women Dieting During Their Period
- Track your cycle: Knowing where you are in your menstrual cycle helps anticipate cravings and energy dips.
- Be flexible with fasting: It’s okay to delay or shorten fasts if you feel unwell.
- Hydration and micronutrients: Iron and magnesium-rich foods can help alleviate symptoms.
- Be kind to yourself: A piece of chocolate is not failure—it’s part of life.
Final Thoughts
Even though today wasn’t perfect, I know I’m still on the right track. The Switch On Diet has taught me to focus on long-term results, metabolic flexibility, and emotional awareness. Tomorrow’s fast may be challenging, but I’m not giving up—I’ll do what I can, listen to my body, and move forward.