Gemma Collins has looked to sub-zero cryotherapy in a bid to “shock her system” back to health after long Covid symptoms made her convinced she was dying of a heart attack.The 42-year-old reality star contracted the virus last year and she has been suffering from the side effects ever since. Only last month, Gemma revealed she had to ring for an ambulance and thought she was going to die. “The palpitations got so bad I thought I was having a heart attack,” she says.