I added these hip stretches to my strength training sessions and noticed a huge difference after just 10 days

Woman performs half-pigeon pose.

I often feel stiff and sore after lifting weights, particularly if I've neglected to do any cooldown stretches. My hips are my main problem area, feeling tight and uncomfortable after most gym sessions. 

I hate training with already sore muscles, so I decided to try and alleviate my discomfort by adding two simple yoga stretches onto the end of my workouts: frog pose and half pigeon.