If this applies to you, then try this quick, simple myofascial release exercise for your calves. Take a solid object which can apply pressure into the muscle tissue, in the video PhD athlete, Josh, uses a kettle bell.
Lower your calf onto the kettle bell at the point where you feel the most tension. Apply body weight pressure & manoeuvre on the tight area for 5-10 seconds then relax. Perform 4-6 times & ensure it doesn’t cause too much discomfort. This will help release tension in the soleus and gastrocnemius and allow greater flexibility in the calves.