In the days before your period, you may notice a tiredness that feels heavier than ordinary fatigue, paired with a low mood that can catch you off guard. You might feel irritable for no clear reason, struggle to concentrate, or find your emotions sitting closer to the surface than usual. These are familiar symptoms of premenstrual syndrome (PMS), and they shape your mood, mental health, and energy at certain points in your cycle. Understanding the pattern can help.
When in your cycle low energy and low mood tend to arrive
The tiredness, broken sleep, mood swings, and low or anxious feelings of PMS tend to build in the weeks before your period. For most people they ease once bleeding starts and clear within a few days.2
This stretch lines up with the luteal phase, the time between ovulation and the start of your period. As progesterone rises and then drops away in the days before your period, mood, energy and irritability can all shift. Research suggests it is the falling away of progesterone in late luteal, rather than its rise, that tends to coincide with those harder premenstrual days. That hormonal backdrop helps explain why the tiredness of the premenstrual days can carry an emotional weight that ordinary tiredness does not.1
The self-criticism that tends to follow low energy
Low energy in the premenstrual phase rarely turns up on its own. It often comes with a second, quieter weight, the sense that you should be managing better. You might catch thoughts about not being productive enough, being too emotional, or falling behind. This kind of self-criticism during a low-energy phase is common, and it can make your symptoms feel more intense than they otherwise would.
Piling shame or self-blame on top of what your body is already doing can make the whole thing harder to move through. Pushing through relentlessly when your energy is low tends to add to your stress rather than ease it.3
Self-compassion as a practical response to cyclical low energy
Self-compassion means meeting your own hard moments with the same kindness you would offer someone else. Instead of reading low energy as a personal failing, you treat it as a recurring, physical part of your cycle, and you adjust what you expect of yourself to match.4
One simple way to practise this is to notice a self-critical thought and reframe it. "I should be handling this better" can become "I am doing what I can with a tough set of symptoms." "I am falling behind" can become "I am adjusting my pace to look after myself." Small shifts in how you talk to yourself during a low phase can ease the emotional load that sits on top of the physical one.5
Tracking your cycle to reduce guilt around low-energy phases
One of the most practical steps is to track your symptoms across at least two cycles. A simple diary helps you see when your low-energy phases tend to land, so you can plan around them instead of being caught out. When you know a dip is likely, you can move demanding commitments and build in time to rest. Easing the expectation to be fully productive on those days leaves less room for guilt to grow.6
Gentle movement and stress reduction during low-energy phases
In the premenstrual phase, high-intensity activity may feel out of reach, and that is a reasonable place to be. Gentle movement like walking or stretching can lift low mood and ease anxiety without adding to the drain. Calming practices such as yoga or meditation may also help how you feel emotionally during this part of your cycle. Small, manageable ways to be kind to your body when it is asking for less are enough.7
When to seek further support for mental health and energy across cycle phases
If the emotional side of your cycle is affecting your daily life and the approaches above are not giving you any relief, it is worth speaking with your GP. Cognitive Behavioural Therapy (CBT), a talking therapy that helps you notice and shift unhelpful thought patterns, is one option your GP may talk through with you. Bringing the pattern of your symptoms across several cycles, including when they start and how they affect your mood and energy, helps your GP see the full picture.8