Carlos Alcaraz thanks to magic potion in tennis final, but what is it and does it really help?

A strong cramp attack in the marathon match against Alexander Zverev seemed to cost Carlos Alcaraz the final of the Australian Open. However, a ‘magic potion’ kept the Spaniard going. Alcaraz recovered and still won: 6-4, 7-6 (5), 6-7 (3), 6-7 (4), 7-5. But was that really due to his bottle of pickle juice?

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