With a quick look, you may not know which pre-workout is the best choice. 

PreSeries Lean is made for weight loss and to increase glucose metabolism, while Bulk is made to support strength and muscle. 

Both pre-workouts are great for mental energy and focus. 

But Bulk is better suited for muscle hypertrophy goals while Lean is great for fat loss.

While Lean looks like it have similar ingredients, it has high-quality sources of minerals and ingredients to enhance fat metabolism.

Use discount code FITFREK

Bulk is made to optimize testosterone production while Lean is made to maximize thermogenesis for weight loss. 

Both are great options as they are made by Transparent Labs, a company that has a long-standing reputation for making high-quality supplements. 

In this comparison, we'll look at Transparent Labs Bulk vs Lean.

Both of these pre-workouts are naturally sweetened.

We'll explain the main differences, advantages, and disadvantages of everything to help you decide on which pre-workout to go with. 

Both of these have one thing in common, they contain ergogenic aids and they don't use artificial colors or sweeteners.

Transparent Labs designed Bulk with more muscle-building ingredients that will help maximize performance mentally and physically, while Lean is made more with mental enhancers and components that help metabolize fat from various angles.  

Bulk has vitamins for testosterone and muscle-building support, including vitamins D3, B6, zinc, and boron. 

While Lean also has zinc, it also uses important ingredients for fat loss like iodine, selenium, copper, and chromium.

If you're deficient in these ingredients, you'll likely struggle to lose weight and control your cravings. 

If you're looking for a solid pre-workout, both, Lean and Bulk, are great options. 

Bulk is better designed if you're looking for a complete pre-workout to help improve your workouts. 

It has everything needed for reducing fatigue, increasing strength, and boosting cognition functions. 

Lean is good but it's more designed as a thermogenic as it contains ingredients that'll support better insulin function and more fat metabolism, and is just better for weight loss.

Which Pre-Workout is Better For Pumps?

Bulk is better for pumps as it has the full dose of betaine at 2.5g but otherwise, both are great for pumps. 

Which Pre-Workout Is Better for Energy?

Both pre-workouts have the same amount of caffeine but Bulk has a slight edge due to the combination of tyrosine and Alpha GPC, as Lean only uses choline for focus support. 

Which Pre-Workout Should I Get?

If you're just looking for a solid pre-workout, you can't go wrong with either although Bulk has a slight edge as something that will help maximize endurance and energy. 

If you're trying to lose stubborn fat, or just trying to lose weight in general, you'll enjoy Lean more. 

As a beginner or any level, both pre-workouts are great options. 

Bulk is made to be the best pre-workout for anyone looking to increase their workout performance.  

Using ingredients that'll increase power, strength, and endurance, it'll provide quite a boost for anyone looking to maximize their results in the gym. 

With over 20g per serving and 30 full servings, Bulk is a solid choice as a pre-workout.

Citrulline is dosed at 6g, which will help with pumps, and beta-alanine will reduce the lactic acid build-up that occurs from high-volume sets. 

There's also a nice dose of BCAA's to help prevent catabolism and there's a 2.5g dose of betaine anhydrous to help maximize size and strength as it works similarly to creatine. 

With a mix of stimulants coming from caffeine, theobromine, and caffeine malate, there's a nice long-lasting source of energy. 

It also has nootropics to help maximize focus and mind-to-muscle connection with 1g tyrosine and 300mg AlphaSize Alpha GPC.

Overall, Bulk is a solid pick for someone looking to maximize their performance in the gym. 

The only reason why you wouldn't pick Bulk is because of its premium pricing but you can knock off 10% with discount code FITFREK. 

Lean is a thermogenic pre-workout hybrid that combines ingredients that will not only increase performance but also fat burning. 

When it comes to ergogenic aids, there's a lot in common with Bulk as it still has citrulline, beta-alanine, betaine, and caffeine. 

But instead of using 4g of beta-alanine, it uses 2g, and it has 1.5g betaine instead of 2g. 

And Lean also uses 630mg of acetyl-l-carnitine which helps convert fat into energy, increasing fat metabolism. 

Like all Transparent Labs supplements, this is clinically dosed and there are no artificial ingredients. 

The minerals in Lean will help optimize thyroid function, improve insulin sensitivity and increase fat metabolism. 

In fact, these minerals are highly underrated and are a must even if you are using a fat burner with very strong stimulants. 

Just check out the science and research behind Lean's ingredients here. 

Lean is a pre-workout that is formulated to help keep fat off and performance, both physically and mentally, elevated in the gym.

The only downside is the premium pricing but you can use our discount code FITFREK. 

As someone who mostly uses very strong pre-workouts, Bulk helped me push through without putting a huge demand on my cardiovascular system. 

Hard pre-workouts usually give me very intense energy which can interfere with sleep even if it's taken long before the evening. 

So using Bulk allowed me to sleep better at night and still have great workouts during the day. 

The energy is just enough. 

So I can appreciate the caffeine staying under 300mg, and it comes from 3 different sources so it isn't just plain caffeine. 

My performance also feels solid. 

That's what I like about Bulk, it's reliable, I can use it often without consequences of withdrawals or side effects like jitters and such. 

Using Lean has made me realize something... 

The minerals in Lean are highly important for fat loss. 

I've used all sorts of fat burners and thermogenic but without these minerals, I just don't feel right. 

The reason for this is that the minerals in Lean are extremely important for weight loss management. 

It helped me keep cravings in check and it seems to help me have more energy as it helps converts fat into energy. 

You can check out my review here. 

By now you should have some idea of which one you'd go with. 

Lean has less beta-alanine and will cause fewer tingles while Bulk has ingredients that'll help improve performance by increasing strength and muscle size. 

Lean also has more minerals for fat loss support while Bulk has minerals for testosterone support. 

You should use Bulk if you already get enough minerals for weight loss, or if you just want a solid pre-workout for your workouts. 

And use Lean if you're looking to lose weight and still want ingredients to support endurance and strength in the gym. 

When it comes to choosing which pre-workout to go with from Transparent Labs, you should consider your goals.

Use Bulk if:

• You want to build muscle 
• You want a pre-workout for workouts 

Use Lean if:

• You have stubborn fat
• You have cravings that make you overeat
• You want to lose fat

You can't go wrong with either pre-workouts, Lean, or Bulk. 

If you're a beginner looking to improve your energy in the gym, then Bulk is a great choice. 

But if you want to lose fat and still want to maximize your workouts, then Lean is a solid pick.