Overstim's

A leader in endurance nutrition in France and the Benelux according to the regional business press, Overstim.s has also supported the Paris Half Marathon since 2012.

The cult product

Gatosport: the pre-race meal

A cake to prepare yourself, to be eaten up to an hour before departure, in a quantity of one-third to one-half of the cake depending on the brand.

Overstim.s Gatosport (400g) - Chocolat-Pépites de Chocolat

Overstim.s Gatosport (400g) - Chocolate-Chocolate Chips

€12.35
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Overstim.s in brief

Overstim.s (often written as Overstim’s or Overstims) is a French sports nutrition brand founded in 1982 in Morbihan, Brittany. This family-owned company makes its products in France and is known for Gatosport, its pre-race cake created in 1983.

Company profile
OriginFrance (Plescop, near Vannes, Morbihan)
Founded1982
Flagship productGatosport, created in 1983
ManufacturingIn France, at its own production facility
PartnershipParis Half Marathon since 2012

Gatosport, an idea from 1983

The story began with a constraint familiar to runners: eating early enough before a race. Frédérique de Saint-Ouen says Gatosport was created to avoid having to get up at dawn. The idea: a highly digestible energy cake to be eaten up to an hour before exercise, with water, tea, or coffee. It has become the company’s flagship product.

“So you don’t have to get up at dawn.” Frédérique de Saint-Ouen, on the creation of Gatosport (Le Journal des Entreprises)

A Breton SME that makes its own products

Based in Plescop, north of Vannes, Overstim.s has its own production facility. The brand has partnered with the Paris Half Marathon since 2012 and lists cyclist Warren Barguil, marathon runner Dominique Chauvelier, and trail runner François D’Haene among its ambassadors.

Which Overstim.s product should you choose?

  • Before exercise: Gatosport (400 g), also available in BIO and gluten-free versions. Spordej Eco (1.5 kg).
  • Sports drinks: Hydrixir Antioxydant (600 g or 3 kg), Hydrixir BIO, Malto Antioxydant, Malto BIO and Malto Ultra, Boisson Électrolytes (10 x 8 g).
  • Gels (32 to 34 g): Energix liquid, Energix Miel BIO, Coup de Fouet, Antioxydant, Red Tonic mint-eucalyptus.
  • Solid foods: Fruit’n Perf BIO fruit pastes, Amelix Bio almond paste, Nougat BIO, Authentic Bar.
  • Very long efforts: Hydrixir Aliment Liquide 640 and Salt & Electrolytes capsules.

Overstim.s at Nutri-Bay

Overstim.For other French sports nutrition featuring chef-created recipes, see Baouw or TA Energy. Browse our full organic selection.

Sources: Le Journal des Entreprises, Sporsora, Paris Half Marathon.

Frequently asked questions about Overstim.s

According to the brand, up to an hour before departure, have one-third to half the cake with water, tea, or coffee. Try it first before a training session.

It’s the same brand. The official name is spelled Overstim.s, but it’s often written as Overstim’s or Overstims.

Yes. The company, based in Plescop near Vannes, has its own production site in France.

Yes: Gatosport BIO, gluten-free Gatosport, BIO Malto, Hydrixir BIO, BIO Honey Energix Gel, Fruit’n Perf BIO, BIO Nougat, and Amelix Bio.

Since 1982. Gatosport, its best-known product, was created in 1983.

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Overstim.s Malto BIO (450g) - Citron
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Overstim.s Gatosport BIO (400g) - Chocolat
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