DISCLAIMER: This picture is a commission and was NOT drawn by me.
As mentioned previously, Sindy takes a lot of pride in her physique, and works hard to keep herself fit and strong. Unfortunately, her body's habit of expanding as it heats up presents certain... challenges, especially during the long, intense workouts the fiery she-dragon favors. The harder Sindy pushes herself, the hotter she gets, and the more swollen and cumbersome her already buxom figure becomes.
Sindy, however, isn't about to let a little thermal expansion get in the way of her workout - even if it does mean she goes through at least one sports bra per-day.
I'm seriously surprised they haven't kicked her out of the gym for indecent exposure yet. >>