We asked a personal trainer how he would spend $100 on supplements. Here's what he bought.

Tech Insider : Business
A man shopping for supplements in a store aisle.
Shopping for supplements can be overwhelming.

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One fitness supplement can help you build muscle and maybe boost longevity without breaking the bank, according to experts

Tech Insider : Business, Sports
A person scooping a supplement powder into a clear plastic cup.
Creatine is one of the most researched fitness supplements on the market. it offers a lot of value for its low costs, according to trainers and sports nutritionists.

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Creatine, ADHD video games: The quest for a better brain is turning into a gold rush

Tech Insider : Business, Technology
A human brain with a pair of headphones and supplement pills

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3 supplements to build muscle and keep bones strong, taken by the surgeon who did Kris Jenner's hip replacement

Tech Insider : Business
A man wearing a suit stands on a rooftop.
Dr. Jason Snibbe takes working out as seriously as his job in the hope of staying strong and mobile into old age.

Jason Snibbe

Ciara is on the creatine hype. She shared how she makes taking it every morning tasty and quick.

Tech Insider : Business
Ciara performing.
Ciara takes creatine every morning for extra energy.

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