Arnold Schwarzenegger's online fitness-info venture, Arnoldspumpclub, has helped several muscleheads, and the organisation recently gave four points to consider to start your supplement journey.

On February 15, 2026, Arnoldspumpclub shared an Instagram post highlighting how the inexperienced ones often "wonder" what supplements to take and feel worried the available options."

It also answered the doubts, mentioning, "Look no further than 'The Core 4' supplements, (D3, Omega-3, Magnesium, and Protein)."

So, let's take a look at how these four supplements promote good health specifically.

Vitamin D

• Globally, many people suffer from Vitamin D deficiency, affecting nearly 30-50% of the world population. 
• Vitamin D helps enhance mood, support muscle development, and strengthen bones.

• Make sure to have a yearly test for it, and the normal range is 30 to 50 ng/ml.
• If the level is below thirty, the recommended dose for most adults is 2000 IU to 4000 IU daily. 

Omega-3

• It helps improve brain functioning and supports heart health. Fish oils mostly contain Omega-3 fatty acids.
• It also assists in reducing inflammation.
• The best form of fish oil to consume comes with DHA and EPA.
• The optimal target range of omega-3 is 8 to 12%
• The recommended daily dose is 1-2g (EPA+DHA)
• It also supports eye function and healthy skin.

Magnesium

• This helps to regulate the whole body.
• Magnesium deficiency is known as hypomagnesemia.
• Deficiency can cause heart palpitations, muscle cramps, and fatigue.
• It was advisable to consume a magnesium supplement at night because it improves sleep patterns. 
• The daily recommended dose is 200 to 400mg.
• The most suitable form of magnesium to consume is Glycinate (for sleep), Citrate (constipation), L-threonate (for brain health), and Malate ( for energy/muscles).
• Make sure to avoid magnesium oxide because its absorption rate is low. 

Protein

• Protein is the ultimate powerhouse for muscle growth.
• It supports muscle recovery and fat loss.
• The daily dose per kilogram of body weight is 1.2 to 1.6g of protein.
• Those who train regularly can use the recommended dose. They can use up to 2.2g per kilogram of bodyweight.
• Protein is the building block for muscle hypertrophy. 
• The best option to complete the daily dose is whey protein.

So, are you thinking of including any of these in your supplement consumption routine?

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Written by

Supradeep Dutta

Edited by

Souvik Roy