I'm a novelist. How do I write this action? The female lead was lying down while the male lead was lying on the other side, like push-ups.

Such an action could be described by describing the female protagonist lying next to the male protagonist in a push-up posture. For details, you can refer to the following plot: The female lead lay gently beside the male lead, breathing steadily and looking serene. The male protagonist leaned over and lay beside her, holding her waist with both hands and hugging her tightly. His breathing was steady and there was a satisfied smile on his face. The female lead felt the male lead's body, feeling his warmth and strength. The male protagonist began to do push-ups with his palms down and his hips up. His body gradually became stiff. The female protagonist gently pushed the male protagonist up and let him continue to do push-ups until he completed one action. Some emotional descriptions could be added to the interaction between the female protagonist and the male protagonist to let the readers feel the emotional bond between them. For example, the female protagonist might be silently cheering for the male protagonist in her heart, or the male protagonist might think of something related to the female protagonist during the process of push-ups, and his heart would be filled with longing and emotion. By describing the male protagonist's push-ups and the female protagonist's feelings, the readers could feel the tacit understanding and feelings between them.