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Br Med J (Clin Res Ed) 1984;288:362

Short-term effects of cigarette smoking on muscle function In the UK, around 1 in 4 people in manual occupations smoke, and around 1 in 3 smokers are physically active (18)

"These findings have important regulatory implications, because the features of e-cigarette products - such as the power of the device and the presence of flavourings - can be regulated and standardised," he said

In addition, many contain fruit and spice flavorings such as strawberry, mint and berry extracts that are know irritants on the skin and possibly can also produce hives and a systemic allergic reaction