# 6 reasons you get tired during exercise and how to fix it

Canonical: https://www.mojohealth.net/lp/burn/tired-during-exercise
Published: 2 Oct 2026
Product: [MOJO™ BURN Capsules (Men)](https://www.mojohealth.net/products/mojo-burn-l-carnitine-keto-capsules-metabolism-energy-support-for-men-women)

> Six reasons you are tired during workouts and supplements that address each cause. How MOJO BURN supports performance from £9.97.

You have energy at the gym but it evaporates early in your session. By the end you have nothing left. You wonder if you are not fit enough or if you are dieting too hard. The real reason is usually that you are missing one of six key things your body needs to sustain effort. Here are those six reasons and how MOJO BURN Capsules address them all.

MOJO™ BURN Capsules (Men): Subscribe & save: £9.97 first 28 days, then £34.97 every 28 days · cancel any time · £47.97 one-time, no subscription

## Before / After

- ✕ Excess fat
- ✕ Low energy
- ✕ Cravings
- ✕ Slow metabolism
- ✕ Fatigue
- ✕ Unwanted weight
- ✓ Faster energy release
- ✓ Increased vitality
- ✓ Controlled appetite
- ✓ Enhanced metabolism
- ✓ Better endurance
- ✓ Healthy weight management

Outcomes as described on the product page; results vary.

## What buyers say

- “MOJO Burn has given me the energy boost I needed for my workouts and daily routine!” — Angela Carter, verified buyer
- “I’ve never felt more focused and energized throughout the day—Mojo Burn really works!” — Eddy Brooks, verified buyer
- "I've already noticed a difference in my energy!" — James Graham, verified buyer

## How it works

1. **Boosts Energy with L-Carnitine** — L-Carnitine helps transport fatty acids into the cells' mitochondria, where they are used for energy, supporting your active lifestyle.
2. **Enhances Energy Production** — By increasing the efficiency of fat metabolism, L-Carnitine provides a natural energy boost, helping you stay active and focused throughout the day.
3. **Supports Keto Diet Goals** — Designed for keto enthusiasts, this supplement works synergistically with a low-carb, high-fat diet to help your body use fat for fuel instead of carbs.
4. **Part of Your Daily Routine** — The ingredients in Mojo Burn are formulated to fit easily into a balanced diet as part of an active lifestyle.

## 1. You are not carrying enough calories into the workout

**Who it's for:** Anyone training on an empty stomach or after skipping meals.

Energy during exercise comes from glucose and stored fuel. If you are training fasted or after eating too little your body has nothing to burn. The supplement cannot replace food, but MOJO BURN supports your body to use what fuel you do have more efficiently and to access stored fat.

**Why it matters:** Supports physical energy and training stamina without harsh stimulants or crashes.

**Tip:** Eat a meal or snack one to two hours before training for the best results; supplementation supports that fuel.

## 2. You have not topped up the mineral cofactors your body uses for energy production

**Who it's for:** Anyone whose fatigue during workouts gets worse over weeks of training.

Your muscles need magnesium and zinc to convert fuel to energy. If you are training hard you deplete these minerals. Without replenishing them your energy production systems slow down and you hit walls. A good workout supplement replenishes these, not just adds stimulants.

**Why it matters:** Magnesium Oxide and Zinc Citrate support the energy production systems your body runs during training.

**Tip:** Take MOJO BURN every morning, even on rest days, so your mineral status stays topped up.

## 3. Your blood sugar is crashing mid-workout because you lack glycemic support

**Who it's for:** Anyone whose energy crashes suddenly and completely mid-session rather than fading gradually.

Blood sugar crashes feel like hitting a wall: one minute you are fine, the next you have nothing. Chromium support keeps blood sugar stable so your energy is consistent. This is why energy drinks with sugar work temporarily—they fix the crash—but supplemental chromium does it without the crash after.

**Why it matters:** Chromium Picolinate supports normal blood sugar balance during workouts.

**Tip:** Pre-workout nutrition and chromium support together keep your blood sugar and energy steady.

## 4. You are not moving stored fat into the cells efficiently

**Who it's for:** Anyone in a calorie deficit who needs to use stored fat for workout energy.

If you are dieting down your body needs to use stored fat for fuel. L-Carnitine is the shuttle that moves fat from storage into your cells. Without enough carnitine your body cannot mobilise fat fast enough to keep up with workout demands. This is why adding carnitine often fixes mid-workout fatigue for people in deficits.

**Why it matters:** L-Carnitine L-Tartrate supports the transport of fatty acids for energy during training.

**Tip:** Take MOJO BURN 30 minutes before training; the carnitine works hardest during the workout.

## 5. Your nervous system is not getting the energy stimulus it needs

**Who it's for:** Anyone whose mind feels foggy during workouts or who loses motivation mid-session.

Physical fatigue and mental fatigue are different systems. L-Tyrosine builds dopamine and noradrenaline, the brain chemicals that create drive and focus. If you are mentally tired during training even though your body has fuel left, tyrosine fills that gap. You finish strong instead of fading mentally.

**Why it matters:** L-Tyrosine supports neurotransmitter balance and mental clarity during training.

**Tip:** Mental clarity and motivation are often the limiting factors; addressing them can extend your energy reserve significantly.

## 6. You do not have sustained energy and endurance support built in.

**Who it's for:** Anyone wanting to train hard and recover quickly without supplements that compromise endurance.

Good workout supplements support you to train hard without crashing after. Green tea thermogenesis, guarana for sustained energy and ginseng for endurance together mean you do not sacrifice intensity for recovery. You train hard and recover hard without the collapse that usually follows.

**Why it matters:** Green tea, guarana and ginseng support sustained energy, thermogenesis and endurance during demanding sessions.

**Tip:** Consistency matters: give these ingredients two to three weeks to show their full performance-supporting benefit.

## Made in the UK, tested every batch

- **UK Manufactured** – produced in GMP-certified facilities
- **Batch Tested** – independently tested for purity, safety, and consistency
- **UK Crafted** – manufactured to strict quality and compliance standards
- **No Banned Substances** – compliant, clean-label formulation
- **Quality Assured** – every batch verified before release

## Results

- ⚡ 72% report increased energy levels as part of their daily routine.
- 🔥 67% say they felt steady energy between meals.
- 📉 64% noticed great progress when combined with diet and training.
- 💪 74% feel more confident in their physique after consistent use.

_Results based on SurveyMonkey.com data of 1,000 existing customers - October 2025*_

## The short version

You get tired during workouts because your body is missing one or more of the six key systems that create sustained workout energy.

Address all six at once—fuel availability, mineral cofactors, blood sugar stability, nutrient mobilisation, mental clarity and sustained endurance support—and…

Start MOJO BURN Capsules on the £9.97 Starter Pack: take 1–2 capsules 30 minutes before training for two weeks.

## Frequently asked questions

### Should I take a pre-workout supplement or MOJO BURN?

MOJO BURN is designed for daily use to support overall energy and performance. Take it every morning rather than only pre-workout. It works better with consistent daily use than as an occasional pre-workout booster.

### Will MOJO BURN help me finish strong instead of fading?

Yes. It supports sustained energy, fat mobilisation, blood sugar stability and endurance so you finish strong rather than fading at the end of your session.

### How far before training should I take it?

Take it 30 minutes before training for the best pre-workout effect. The guarana and carnitine work hardest when you are already exercising.

### Can I take it on rest days?

Yes. Take it every day for the best results. Rest days are when your body replenishes the minerals and cofactors that training depletes.

### What if I still get tired during training?

Give it two to three weeks of consistent daily use. Energy and endurance support builds gradually. If it still does not help, check your nutrition and training intensity with a coach.

### How does the subscription work and how do I cancel?

Your first order is £9.97 for the first 28 days, then £34.97 every 28 days. You can cancel any time.

### What is the guarantee?

Every order is covered by our 60 Day Guarantee, with Free Returns and Free Shipping*.

## Why MOJO™ BURN Capsules (Men)

If you get tired during workouts, MOJO BURN Capsules address all six causes: mineral and fuel cofactors, blood sugar stability, nutrient mobilisation, mental clarity and sustained endurance. Take 30 minutes before training for best results.

**60 Day Guarantee.** 60 Day Guarantee · Free Returns · Free Shipping* · Fast & discreet UK shipping · free on every order

## Related guides

- [6 ways L-carnitine supports your training routine (and the capsule that has them all)](https://www.mojohealth.net/lp/burn/l-carnitine): Six ways L-carnitine supports your active routine, what to pair it with, and how MOJO BURN Capsules deliver it alongside CLA and green tea.
- [6 ways conjugated linoleic acid supports your active lifestyle (plus the capsule)](https://www.mojohealth.net/lp/burn/conjugated-linoleic-acid): Six ways conjugated linoleic acid supports body composition, what to pair it with, and how MOJO BURN Capsules put CLA and five other metabolic drivers in one