How Your Menstrual Cycle Can Affect Your Training (And What To Do About It)

Caitlyn Davey • July 8, 2025

It’s not a widely discussed topic, but it’s one that roughly half of the population deals with – periods. It affects your mood, your strength, your weight, your calorie output, among other things. Women in the gym can struggle to get the most out of their sessions, some research has shown women see a 60% reduction in strength from one week to another due to cycles. This week on the Rebuild Health & Fitness podcast, we speak to Sarah Boyer - a qualified coach and nutritionist, who focuses on training females and is a female herself, thus giving some good insight into the effects of periods and cycles on training and health. It’s not a widely discussed topic, even within the industry, James says. “During uni for me, any sports team, nothing was ever mentioned about the female menstrual cycle.” THE CYCLEThe menstrual cycle is broken up into different phases:James says: “There are different phases of the cycle, there’s follicular, which we’ll call your more positive weeks.' This is the time between your first day of your period and your ovulation.  “Then you have your ovulation – when you’re most fertile, when you’re horniest, and then you have your luteal phase, which is post-ovulation, you have an increase in your metabolic rate, you have more insulin resistance at the same time and all the things in this phase are not spoken about.” The luteal phase, the time from ovulation to menstruation – which is typically about 14 days – this is when premenstrual syndrome happens, this is when you'll find training a little more challenging and adhering to your nutrition can be more difficult. Your menstruation happens between your luteal and follicular phases, that is your period, which is when the uterus lining sheds.  Sarah says the luteal phase is a time when women will burn more calories and is a time for self-compassion, it's when we see estrogen and progesterone rising and testosterone drops - which means that you may feel like you have less energy. “You get to that week three – where we understand that you see the progesterone levels getting higher and women can burn 100-300 calories more per day; no wonder we get hungry and want chocolate.“We have this pressure that we should be eating the same way every day or that we should feel the same amount of energy every day. But we don’t get to. In that second phase of our cycle, we get hungrier and we can mentally feel worse too – and that’s a killer combination.” Sean agrees, outlining with some of his clients that they opt for a two-week-on, two-week-off nutritional programme. He says: “Dieting with female clients – there are two weeks within the cycle where it’s not optimal to be on an aggressive diet, especially when you’re needing those extra calories each day. And some people get confused- it’s not over a week that you need 100-300 extra, it’s each day during that part of your cycle.” Knowing where you are in your cycle can help you adhere to your training plans and accommodate your body’s requirements. Sarah says: “You don’t start a diet halfway through your cycle, when you’re about to become moody, about to start overthinking, about to start to become mildly irrational, you could feel more bloated and lethargic and you may need more food. You don’t start going into a (calorie) deficit then.” While these phases are important to know, you can’t really stop them from happening but you can train and eat around them.  Fitr Woman is one useful app the team recommends for tracking that can offer insight into how to train according to your cycle. James says: “There’s nothing you can really do about this from a training aspect, but you must understand it. The more we understand it as male coaches, and as females – the less guilt I think people will have.” Hear more about training and menstrual cycles on the Rebuild Health & Fitness podcast, available on Apple Podcasts, Spotify, Google Podcasts or wherever you stream your podcasts. 

Previous Blogs

July 22, 2025
If you live in Wynnum or Capalaba , chances are you’ve seen a bootcamp in action — high-intensity sessions in parks, with lots of burpees, sprints, and shouting. While bootcamps can be a fun way to get sweaty, there’s a reason more people are choosing structured strength training instead. At Rebuild, we often meet people who’ve jumped from one bootcamp to another, chasing results they never quite achieve, or can’t maintain. Here’s why strength training, not bootcamp-style fitness, is the smarter long-term approach for your health and body. 1. Progress Over Punishment Bootcamps often focus on burning calories and pushing people to their limits every session. It feels intense — but it’s usually random. There’s no plan beyond “go hard”. Strength training is different. It’s measured, progressive, and adaptable . Whether you’re lifting a barbell or doing bodyweight movements, the goal is to build skill, strength, and confidence over time. You're not punished for where you're at — you're coached toward where you want to be. 2. Stronger Muscles = Better Results Cardio-heavy bootcamps might help you lose weight quickly, but they rarely help you build muscle, and muscle is the key to long-term fat loss, strength, and mobility . When you train with resistance (weights, bands, or bodyweight), your body becomes more efficient. You burn more calories at rest, move better, and feel more capable in everyday life. And unlike bootcamps, strength training actually preserves lean mass while you're in a calorie deficit — which matters if your goal is body composition, not just weight loss. 3. Individual Coaching Matters Most bootcamps have one instructor yelling instructions to a big group. There’s rarely time to check your technique, let alone adjust for injuries, experience, or confidence levels. At Rebuild, our group sessions are coach-led and purpose-built . We take time to teach proper form, scale movements to your ability, and track your progress. You're not just surviving a workout — you’re learning how to move better and train smarter. 4. It’s Not Just About Today’s Workout Bootcamps often lack structure. You show up, do something exhausting, and leave. There’s no continuity or long-term planning. Strength training follows a programmed approach , meaning each week builds on the last. You’ll have sessions designed to improve specific movements and outcomes — whether that’s lifting more weight, increasing core strength, or mastering your first pull-up. That structure keeps you consistent, motivated, and injury-free. 5. Sustainability Over Shock Tactics If you’re tired of the “go hard or go home” mentality, strength training is for you. It’s adaptable to all ages, bodies, and goals . You’ll get fitter, stronger, and more confident — without burning out or breaking down. Ready to train with purpose? If you're looking for something better than a bootcamp in Wynnum or Capalaba , join us at Rebuild. We coach real people — not fitness models — to get real results. 📍 Structured training 📍 Expert coaches 📍 Community that has your back You don’t need to be fit to start. You just need to start.
July 22, 2025
A lot of people have completed a marathon but how many people have collapsed at 40km?

Sometimes you do everything right, and shit still doesn’t go to plan.
 Last weekend I ran in the Gold Coast Marathon, my first ever marathon. I trained properly, my body felt relatively good (all things considered when preparing to run 42.2km), I carb-loaded, and my race day nutrition was dialled in.
 I was ready.
 We set off. Jess and the kids met me at different points on the course with signs, the atmosphere was great. I loved seeing the kids with their signs. Pacing felt on point. The first 21km? Easy. I felt great. Maybe I should’ve drunk more water, but I didn’t think too much of it at the time.
 At 25km, I felt slower, but pace wise I was still holding well. I’d kept telling myself throughout the day "The race starts at 30km." And let me tell you, it does.
 By 30km, the sun was out, and I was starting to struggle. My watch started glitching so I had no real idea of my splits. I thought I was slowing down a lot (turns out I wasn’t), but the effort to keep the same pace suddenly felt 10x harder.
 I hadn’t taken on enough water. Usually, I can get away with lower fluids. Not this time. Dehydration crept in. hard.
 At 35km I was in survival mode, one foot in front of the other, flicking between moments of pain and little short lived waves of “let’s go.” But by 39km I was delirious. I could see the finish line, I hit the 40km mark (where I thought enjoyment might return to finish), and I collapsed.
 I was gone. Scary stuff.
 The last few hundred metres were a complete blur. All I remember is the crowd, the medics, and about five paramedics suddenly around me. I was vomiting, shaking, confused, in and out of it. I had this overwhelming, indescribable feeling, and honestly, for a moment, I thought I could die.
 My memory went. I couldn’t recall the day, the year, where I lived, or how to spell. I only knew who Jess and the kids were, and that I didn’t want them to see me with wires in me. 
 My temperature had hit 40°C. Blood pressure crashed. Thankfully, the medics and paramedics were incredible, I had a drip running into me within 10 to 15 minutes.
 As I already knew, I’m stubborn. I wanted to run it all. Not walk. Not stop and breathe and In hindsight, I should have. 
 Seems like my mind was just a bit stronger than my body on the day. I never thought I could push myself there in all honesty. 

Am I gutted? Of course, I was only 2km away but I gave it everything I had on that day. Heat stroke, exhaustion, and dehydration got me. 

I am always reminded here of the quote ‘The man in the arena’ look it up if you need. 
 Will I run 42.2km again? Yes, I feel I need to. 

Would I do things differently, now I’ve run 40km under race conditions? You bet, lessons learnt. Always lessons. Never be scared to not succeed. Be scared to never try in the first place. 
 We go again.
By Caitlyn Davey July 8, 2025
You Need To Earn The Right To Be Good At Something
More Posts