Sexy model Clara visited a fitness center after taking almost a week's break from exercising.
She tweeted, 'I am checking my body fat percentage and muscles mass weight'.
"This is so nerve-racking. I have been busy and haven't trained for a week".
"What's the result?" She was happy her body fat percentage dropped to 17%, reports K-popinsider.
But the report recommended weight training to increase muscle mass to 25.5kg from 22.3kg currently measured.
Clara was in a tight legging and tank-top exercise bra looking fabulous as usual.