Recycler Item:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:imageView="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="6dp">

    <android.support.v7.widget.CardView
        xmlns:card_view="http://schemas.android.com/apk/res-auto"
        android:id="@+id/card_view"
        android:layout_gravity="center"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        card_view:cardCornerRadius="5dp"
        card_view:contentPadding="10dp"
        card_view:cardElevation="3dp">


        <LinearLayout
            android:orientation="horizontal"
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <LinearLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:orientation="vertical">

                <ImageView
                    android:layout_width="34dp"
                    android:layout_height="34dp"
                    android:src="@drawable/exercises_black"/>

                <LinearLayout
                    android:orientation="horizontal"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_marginTop="10dp">

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:textAppearance="?android:attr/textAppearanceSmall"
                        android:text="ID:"
                        android:id="@+id/textView18"
                        android:textSize="8dp"
                        android:textColor="#dbdbdb" />

                    <TextView
                        android:id="@+id/tv_recycler_item"
                        android:layout_weight="1"
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:textSize="8dp"
                        android:text="#1"
                        android:textColor="#dbdbdb" />

                </LinearLayout>

            </LinearLayout>

            <LinearLayout
                android:orientation="vertical"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginLeft="5dp">

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:textAppearance="?android:attr/textAppearanceLarge"
                    android:text="Exercise Name"
                    android:id="@+id/exerciseNameEx" />

                <LinearLayout
                    android:orientation="horizontal"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content">

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:textAppearance="?android:attr/textAppearanceSmall"
                        android:text="Repeats:"
                        android:id="@+id/textView3" />

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:textAppearance="?android:attr/textAppearanceSmall"
                        android:text="Small Text"
                        android:id="@+id/tvRepeats"
                        android:layout_marginLeft="5dp" />
                </LinearLayout>

                <LinearLayout
                    android:orientation="horizontal"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content">

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:textAppearance="?android:attr/textAppearanceSmall"
                        android:text="Muscles:"
                        android:id="@+id/textView5" />

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:textAppearance="?android:attr/textAppearanceSmall"
                        android:text="Small Text"
                        android:id="@+id/tvMuscleGroup"
                        android:layout_marginLeft="5dp" />
                </LinearLayout>

                <FrameLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content">

                    <ImageButton
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:id="@+id/deleteBtnEx"
                        android:layout_gravity="center_horizontal|right"
                        android:background="@drawable/delete" />
                </FrameLayout>

            </LinearLayout>

        </LinearLayout>
    </android.support.v7.widget.CardView>


</RelativeLayout>


Activity Content:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/my_recycler_view"
        android:scrollbars="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="center"
        android:layout_marginTop="60dp" />


</LinearLayout>