After interviewing a colleague I identified they had recently stopped working out due to injury. Preventing repetitive strain in their busy fitness schedule was the key challenge that I set out to solve with a native app. Competitive analysis, crazy eights, storyboarding and user and wireflows based on a problem statement were key components in my process. Prototyping rounds from paper through to hi-fidelity with user testing throughout led to my final solution for this concept brief. The app maintains their schedule and suggests complementary activities for each day based on muscle health. It allows the user to monitor their muscles' exhaustion level and recovery, leading to smarter and safer training. The feedback was that they would use this app if it were available.