We Brits are addicted to sweating. First we fell in love with Bikram yoga – a structured sequence of yoga poses performed at in a 105°F room – then we tried it's cooler predecessor, hot power yoga. Now, we do everything from hot Pilates too hot barre workouts. 'Sweating feels good physically mentally and emotionally – it's cathartic. Brits are flocking to hot yoga', says Michele Pernetta who, who brought Bikram yoga to the UK. This may explain why Pernetta has launched a new heated class – Fierce Grace. Consisting of five yoga classes – Core, Classic, Fierce Grace, Fierce and The Fix – Fierce Grace is the ultimate blend of strength and flexibility. Things are heating up around here."