Kelsea Ballerini says fitness in her 20s was all about looks. Here's what changed once she hit her 30s.

Kelsea Ballerini says her approach to fitness has changed now that she's in her 30s.

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• Country music star Kelsea Ballerini says her fitness goals have changed since she entered her 30s.
• In her 20s, her focus was to look good. Now, it's all about being healthy.
• She practices Pilates, enjoys walking, and follows the 80/20 diet rule.

In her 20s, Kelsea Ballerini says she worked out to look good. Now that she's in her 30s, it's all about feeling good ...