Want to strengthen your core and achieve enviable curves like J.Lo? Her trainer, David Kirsch, shares three medicine ball ...
Genevieve Scarano / BuzzFeed BuzzFeed Shopping editor Genevieve Scarano says, "I work out at home a lot, so it's important ...
A strong core is essential for any fitness pursuit. If you want to run a faster 5K, deadlift hundreds of pounds, or finally ...