Kristine Rucker The Arm Coach on Instagram: "This one tweak will completely transform your arm toning strategy. And no—it’s not a harder workout or a stricter routine. It’s this: Stop quitting every time it isn’t perfect. For years, I thought I just needed more discipline. So I’d go all in—tracking everything, doing every rep, following the plan. But the second I missed a workout, had a stressful week, or didn’t see progress fast enough, I’d hit reset. Again. Here’s what finally changed everythi