Seven weeks ago BMX rider Sarah Walker crashed while training and broke her arm in two places.
She had surgery and just one week off before returning to the gym. She's surprised even herself - smashing out the personal bests.
A week ago Walker got back on the bike and on the track. This week she did a jump for the first time.
But she's in a race against time to compete at the World Championships in Colombia next month. That's where she needs to qualify for Rio.
Her body may not be at its strongest yet, but her mind is. She's confident and positive she can do it.
Check out Sarah's story in her words.
