Learn Spanish (Latin America): Estos estudiantes practican constantemente.

To make an adverb, you normally add -mente to the feminine form of an adjective. However, the adjective constante (constant) ends in -e, which means its masculine and feminine forms are exactly the same. You just take the base word constante and add -mente directly to the end to get constantemente (constantly).

Why is it estos and not estes for 'these'?

Words that point things out can be tricky! The masculine plural of este (this) is always estos (these), never estes. Because the sentence uses estos, we know this specific group of students is either all male or a mix of males and females.

Does the word estudiantes change if they are female students?

The noun estudiante is used for both men and women; the spelling of the word itself doesn't change. Instead, you show the gender by changing the words around it. For an all-female group, you would say estas estudiantes.

Does the adverb constantemente have to go after the verb?

In Spanish, adverbs that describe how an action is done usually go right after the verb they modify. So practican constantemente (practice constantly) is the most natural word order here, which matches the English structure perfectly.