How’s your sleep
Lack of sleep can bump up stress levels and make it harder to make good choices. Poor sleep plays havoc with weight loss as it also affects our hormones.
Studies show that those who sleep less than six hours per night are more likely to be overweight and find it harder to lose weight. So how well are you sleeping?
Our hormones, which are chemical messengers, can help us to understand how sleep could be the missing part of your weight-loss puzzle.
Leptin and ghrelin
Ghrelin is a hormone that tells you when you need to eat. The less you sleep, the more ghrelin you produce. Leptin does the opposite of ghrelin; it sends a signal to the brain to let you know you have eaten enough.
The less you sleep, the less leptin you produce. Lack of sleep and these two hormones make you more susceptible to overeating and less likely to feel satisfied afterward.
Cortisol
This is a stress hormone that breaks protein down into glucose. If there is too much glucose, it gets stored as fat. Excess cortisol makes the body use soft tissue like muscle for its energy needs instead of fat.
Your cortisol levels increase the less you sleep at night. It also triggers a hunger response in the brain, causing you to think you are hungry. Sneaky.
Melatonin
Melatonin is a powerful antioxidant that manages our circadian rhythm or sleep-wake cycle. It is released at the onset of darkness to prepare your body for sleep. Studies have linked melatonin to increased metabolism.
Insulin
Insulin helps your body to absorb glucose from the bloodstream. Not enough sleep can lead to too much blood sugar, and that can lead to insulin resistance.
This means the body will produce more insulin in order to function and could eventually lead to diseases like diabetes. The dreaded D word.
Growth hormone
Your body creates more growth hormone while you are asleep. It stimulates cell reproduction, regeneration and growth. More growth hormone means a higher metabolism, meaning you burn energy more rapidly. This gives us the potential to lose weight faster.
Practical tips to prioritize your sleep
- Stick to a routine – go to bed and wake up at the same time every day, even on weekends.
- Limit screens before bed – blue light from phones and TVs suppresses melatonin.
- Create a sleep-friendly environment – keep your bedroom cool, dark and quiet.
- Avoid caffeine and alcohol late in the day – both can interfere with deep sleep.
- Wind down – reading, stretching or a short meditation session can signal your body it is time to sleep.
Track and optimize your sleep
Keeping a simple sleep diary or using a sleep tracker can help you understand how your sleep affects hunger, energy and weight management. Pairing this with your exercise and nutrition routine can help you identify patterns and make better choices.
Sleep is part of your recovery
Value your sleep as much as your diet and exercise. It gives your body time to rest, recover and rejuvenate. Better sleep improves energy for your training sessions, helps regulate hunger hormones and supports weight loss. Treat it as an essential part of your routine, not an optional extra.
Your body needs time to rest, recover and rejuvenate. Sleep well, and your body will reward you in more ways than one.

Prioritize Sleep, Maximize Results
Sleep is not optional. Treat it as seriously as your workouts and diet. By sticking to a routine, creating a sleep-friendly environment and tracking your patterns, you give your body the rest it needs to regulate hormones, boost energy and support weight loss. Every extra hour of quality sleep is a step towards your goals, so make your bedtime a priority and let your body work for you.










